661505280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5557}}^1$

素因数の和:5612

約数の個数: 144

約数和(自身を含む): 2181225984

約数和(自身を除く): 1519720704

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 31, 32, 40, 48, 60, 62, 64, 80, 93, 96, 120, 124, 128, 155, 160, 186, 192, 240, 248, 256, 310, 320, 372, 384, 465, 480, 496, 620, 640, 744, 768, 930, 960, 992, 1240, 1280, 1488, 1860, 1920, 1984, 2480, 2976, 3720, 3840, 3968, 4960, 5557, 5952, 7440, 7936, 9920, 11114, 11904, 14880, 16671, 19840, 22228, 23808, 27785, 29760, 33342, 39680, 44456, 55570, 59520, 66684, 83355, 88912, 111140, 119040, 133368, 166710, 172267, 177824, 222280, 266736, 333420, 344534, 355648, 444560, 516801, 533472, 666840, 689068, 711296, 861335, 889120, 1033602, 1066944, 1333680, 1378136, 1422592, 1722670, 1778240, 2067204, 2133888, 2584005, 2667360, 2756272, 3445340, 3556480, 4134408, 4267776, 5168010, 5334720, 5512544, 6890680, 7112960, 8268816, 10336020, 10669440, 11025088, 13781360, 16537632, 20672040, 21338880, 22050176, 27562720, 33075264, 41344080, 44100352, 55125440, 66150528, 82688160, 110250880, 132301056, 165376320, 220501760, 330752640, 661505280]

約数ペア:

[(1, 661505280), (2, 330752640), (3, 220501760), (4, 165376320), (5, 132301056), (6, 110250880), (8, 82688160), (10, 66150528), (12, 55125440), (15, 44100352), (16, 41344080), (20, 33075264), (24, 27562720), (30, 22050176), (31, 21338880), (32, 20672040), (40, 16537632), (48, 13781360), (60, 11025088), (62, 10669440), (64, 10336020), (80, 8268816), (93, 7112960), (96, 6890680), (120, 5512544), (124, 5334720), (128, 5168010), (155, 4267776), (160, 4134408), (186, 3556480), (192, 3445340), (240, 2756272), (248, 2667360), (256, 2584005), (310, 2133888), (320, 2067204), (372, 1778240), (384, 1722670), (465, 1422592), (480, 1378136), (496, 1333680), (620, 1066944), (640, 1033602), (744, 889120), (768, 861335), (930, 711296), (960, 689068), (992, 666840), (1240, 533472), (1280, 516801), (1488, 444560), (1860, 355648), (1920, 344534), (1984, 333420), (2480, 266736), (2976, 222280), (3720, 177824), (3840, 172267), (3968, 166710), (4960, 133368), (5557, 119040), (5952, 111140), (7440, 88912), (7936, 83355), (9920, 66684), (11114, 59520), (11904, 55570), (14880, 44456), (16671, 39680), (19840, 33342), (22228, 29760), (23808, 27785)]