638667040

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^3\times {\mathrm{2999}}^1$

素因数の和:3047

約数の個数: 96

約数和(自身を含む): 1660176000

約数和(自身を除く): 1021508960

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1331, 1760, 1936, 2420, 2662, 2999, 3872, 4840, 5324, 5998, 6655, 9680, 10648, 11996, 13310, 14995, 19360, 21296, 23992, 26620, 29990, 32989, 42592, 47984, 53240, 59980, 65978, 95968, 106480, 119960, 131956, 164945, 212960, 239920, 263912, 329890, 362879, 479840, 527824, 659780, 725758, 1055648, 1319560, 1451516, 1814395, 2639120, 2903032, 3628790, 3991669, 5278240, 5806064, 7257580, 7983338, 11612128, 14515160, 15966676, 19958345, 29030320, 31933352, 39916690, 58060640, 63866704, 79833380, 127733408, 159666760, 319333520, 638667040]

約数ペア:

[(1, 638667040), (2, 319333520), (4, 159666760), (5, 127733408), (8, 79833380), (10, 63866704), (11, 58060640), (16, 39916690), (20, 31933352), (22, 29030320), (32, 19958345), (40, 15966676), (44, 14515160), (55, 11612128), (80, 7983338), (88, 7257580), (110, 5806064), (121, 5278240), (160, 3991669), (176, 3628790), (220, 2903032), (242, 2639120), (352, 1814395), (440, 1451516), (484, 1319560), (605, 1055648), (880, 725758), (968, 659780), (1210, 527824), (1331, 479840), (1760, 362879), (1936, 329890), (2420, 263912), (2662, 239920), (2999, 212960), (3872, 164945), (4840, 131956), (5324, 119960), (5998, 106480), (6655, 95968), (9680, 65978), (10648, 59980), (11996, 53240), (13310, 47984), (14995, 42592), (19360, 32989), (21296, 29990), (23992, 26620)]