140030720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3529}}^1$

素因数の和:3581

約数の個数: 72

約数和(自身を含む): 346335360

約数和(自身を除く): 206304640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3529, 3968, 4960, 7058, 7936, 9920, 14116, 17645, 19840, 28232, 35290, 39680, 56464, 70580, 109399, 112928, 141160, 218798, 225856, 282320, 437596, 451712, 546995, 564640, 875192, 903424, 1093990, 1129280, 1750384, 2187980, 2258560, 3500768, 4375960, 4517120, 7001536, 8751920, 14003072, 17503840, 28006144, 35007680, 70015360, 140030720]

約数ペア:

[(1, 140030720), (2, 70015360), (4, 35007680), (5, 28006144), (8, 17503840), (10, 14003072), (16, 8751920), (20, 7001536), (31, 4517120), (32, 4375960), (40, 3500768), (62, 2258560), (64, 2187980), (80, 1750384), (124, 1129280), (128, 1093990), (155, 903424), (160, 875192), (248, 564640), (256, 546995), (310, 451712), (320, 437596), (496, 282320), (620, 225856), (640, 218798), (992, 141160), (1240, 112928), (1280, 109399), (1984, 70580), (2480, 56464), (3529, 39680), (3968, 35290), (4960, 28232), (7058, 19840), (7936, 17645), (9920, 14116)]