19949440

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1$

素因数の和:160

約数の個数: 128

約数和(自身を含む): 56157120

約数和(自身を除く): 36207680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 61, 64, 70, 73, 80, 112, 122, 128, 140, 146, 160, 224, 244, 280, 292, 305, 320, 365, 427, 448, 488, 511, 560, 584, 610, 640, 730, 854, 896, 976, 1022, 1120, 1168, 1220, 1460, 1708, 1952, 2044, 2135, 2240, 2336, 2440, 2555, 2920, 3416, 3904, 4088, 4270, 4453, 4480, 4672, 4880, 5110, 5840, 6832, 7808, 8176, 8540, 8906, 9344, 9760, 10220, 11680, 13664, 16352, 17080, 17812, 19520, 20440, 22265, 23360, 27328, 31171, 32704, 34160, 35624, 39040, 40880, 44530, 46720, 54656, 62342, 65408, 68320, 71248, 81760, 89060, 124684, 136640, 142496, 155855, 163520, 178120, 249368, 273280, 284992, 311710, 327040, 356240, 498736, 569984, 623420, 712480, 997472, 1246840, 1424960, 1994944, 2493680, 2849920, 3989888, 4987360, 9974720, 19949440]

約数ペア:

[(1, 19949440), (2, 9974720), (4, 4987360), (5, 3989888), (7, 2849920), (8, 2493680), (10, 1994944), (14, 1424960), (16, 1246840), (20, 997472), (28, 712480), (32, 623420), (35, 569984), (40, 498736), (56, 356240), (61, 327040), (64, 311710), (70, 284992), (73, 273280), (80, 249368), (112, 178120), (122, 163520), (128, 155855), (140, 142496), (146, 136640), (160, 124684), (224, 89060), (244, 81760), (280, 71248), (292, 68320), (305, 65408), (320, 62342), (365, 54656), (427, 46720), (448, 44530), (488, 40880), (511, 39040), (560, 35624), (584, 34160), (610, 32704), (640, 31171), (730, 27328), (854, 23360), (896, 22265), (976, 20440), (1022, 19520), (1120, 17812), (1168, 17080), (1220, 16352), (1460, 13664), (1708, 11680), (1952, 10220), (2044, 9760), (2135, 9344), (2240, 8906), (2336, 8540), (2440, 8176), (2555, 7808), (2920, 6832), (3416, 5840), (3904, 5110), (4088, 4880), (4270, 4672), (4453, 4480)]