400008960

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2671}}^1$

素因数の和:2711

約数の個数: 216

約数和(自身を含む): 1491008064

約数和(自身を除く): 1090999104

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 64, 65, 72, 78, 80, 90, 96, 104, 117, 120, 128, 130, 144, 156, 160, 180, 192, 195, 208, 234, 240, 256, 260, 288, 312, 320, 360, 384, 390, 416, 468, 480, 520, 576, 585, 624, 640, 720, 768, 780, 832, 936, 960, 1040, 1152, 1170, 1248, 1280, 1440, 1560, 1664, 1872, 1920, 2080, 2304, 2340, 2496, 2671, 2880, 3120, 3328, 3744, 3840, 4160, 4680, 4992, 5342, 5760, 6240, 7488, 8013, 8320, 9360, 9984, 10684, 11520, 12480, 13355, 14976, 16026, 16640, 18720, 21368, 24039, 24960, 26710, 29952, 32052, 34723, 37440, 40065, 42736, 48078, 49920, 53420, 64104, 69446, 74880, 80130, 85472, 96156, 104169, 106840, 120195, 128208, 138892, 149760, 160260, 170944, 173615, 192312, 208338, 213680, 240390, 256416, 277784, 312507, 320520, 341888, 347230, 384624, 416676, 427360, 480780, 512832, 520845, 555568, 625014, 641040, 683776, 694460, 769248, 833352, 854720, 961560, 1025664, 1041690, 1111136, 1250028, 1282080, 1388920, 1538496, 1562535, 1666704, 1709440, 1923120, 2051328, 2083380, 2222272, 2500056, 2564160, 2777840, 3076992, 3125070, 3333408, 3418880, 3846240, 4166760, 4444544, 5000112, 5128320, 5555680, 6153984, 6250140, 6666816, 7692480, 8333520, 8889088, 10000224, 10256640, 11111360, 12500280, 13333632, 15384960, 16667040, 20000448, 22222720, 25000560, 26667264, 30769920, 33334080, 40000896, 44445440, 50001120, 66668160, 80001792, 100002240, 133336320, 200004480, 400008960]

約数ペア:

[(1, 400008960), (2, 200004480), (3, 133336320), (4, 100002240), (5, 80001792), (6, 66668160), (8, 50001120), (9, 44445440), (10, 40000896), (12, 33334080), (13, 30769920), (15, 26667264), (16, 25000560), (18, 22222720), (20, 20000448), (24, 16667040), (26, 15384960), (30, 13333632), (32, 12500280), (36, 11111360), (39, 10256640), (40, 10000224), (45, 8889088), (48, 8333520), (52, 7692480), (60, 6666816), (64, 6250140), (65, 6153984), (72, 5555680), (78, 5128320), (80, 5000112), (90, 4444544), (96, 4166760), (104, 3846240), (117, 3418880), (120, 3333408), (128, 3125070), (130, 3076992), (144, 2777840), (156, 2564160), (160, 2500056), (180, 2222272), (192, 2083380), (195, 2051328), (208, 1923120), (234, 1709440), (240, 1666704), (256, 1562535), (260, 1538496), (288, 1388920), (312, 1282080), (320, 1250028), (360, 1111136), (384, 1041690), (390, 1025664), (416, 961560), (468, 854720), (480, 833352), (520, 769248), (576, 694460), (585, 683776), (624, 641040), (640, 625014), (720, 555568), (768, 520845), (780, 512832), (832, 480780), (936, 427360), (960, 416676), (1040, 384624), (1152, 347230), (1170, 341888), (1248, 320520), (1280, 312507), (1440, 277784), (1560, 256416), (1664, 240390), (1872, 213680), (1920, 208338), (2080, 192312), (2304, 173615), (2340, 170944), (2496, 160260), (2671, 149760), (2880, 138892), (3120, 128208), (3328, 120195), (3744, 106840), (3840, 104169), (4160, 96156), (4680, 85472), (4992, 80130), (5342, 74880), (5760, 69446), (6240, 64104), (7488, 53420), (8013, 49920), (8320, 48078), (9360, 42736), (9984, 40065), (10684, 37440), (11520, 34723), (12480, 32052), (13355, 29952), (14976, 26710), (16026, 24960), (16640, 24039), (18720, 21368)]