220481920

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{11113}}^1$

素因数の和:11163

約数の個数: 64

約数和(自身を含む): 544141440

約数和(自身を除く): 323659520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 11113, 19840, 22226, 44452, 55565, 88904, 111130, 177808, 222260, 344503, 355616, 444520, 689006, 711232, 889040, 1378012, 1422464, 1722515, 1778080, 2756024, 3445030, 3556160, 5512048, 6890060, 7112320, 11024096, 13780120, 22048192, 27560240, 44096384, 55120480, 110240960, 220481920]

約数ペア:

[(1, 220481920), (2, 110240960), (4, 55120480), (5, 44096384), (8, 27560240), (10, 22048192), (16, 13780120), (20, 11024096), (31, 7112320), (32, 6890060), (40, 5512048), (62, 3556160), (64, 3445030), (80, 2756024), (124, 1778080), (128, 1722515), (155, 1422464), (160, 1378012), (248, 889040), (310, 711232), (320, 689006), (496, 444520), (620, 355616), (640, 344503), (992, 222260), (1240, 177808), (1984, 111130), (2480, 88904), (3968, 55565), (4960, 44452), (9920, 22226), (11113, 19840)]