638392440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{457}}^1\times {\mathrm{1663}}^1$

素因数の和:2141

約数の個数: 128

約数和(自身を含む): 2194882560

約数和(自身を除く): 1556490120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 457, 840, 914, 1371, 1663, 1828, 2285, 2742, 3199, 3326, 3656, 4570, 4989, 5484, 6398, 6652, 6855, 8315, 9140, 9597, 9978, 10968, 11641, 12796, 13304, 13710, 15995, 16630, 18280, 19194, 19956, 23282, 24945, 25592, 27420, 31990, 33260, 34923, 38388, 39912, 46564, 47985, 49890, 54840, 58205, 63980, 66520, 69846, 76776, 93128, 95970, 99780, 116410, 127960, 139692, 174615, 191940, 199560, 232820, 279384, 349230, 383880, 465640, 698460, 759991, 1396920, 1519982, 2279973, 3039964, 3799955, 4559946, 5319937, 6079928, 7599910, 9119892, 10639874, 11399865, 15199820, 15959811, 18239784, 21279748, 22799730, 26599685, 30399640, 31919622, 42559496, 45599460, 53199370, 63839244, 79799055, 91198920, 106398740, 127678488, 159598110, 212797480, 319196220, 638392440]

約数ペア:

[(1, 638392440), (2, 319196220), (3, 212797480), (4, 159598110), (5, 127678488), (6, 106398740), (7, 91198920), (8, 79799055), (10, 63839244), (12, 53199370), (14, 45599460), (15, 42559496), (20, 31919622), (21, 30399640), (24, 26599685), (28, 22799730), (30, 21279748), (35, 18239784), (40, 15959811), (42, 15199820), (56, 11399865), (60, 10639874), (70, 9119892), (84, 7599910), (105, 6079928), (120, 5319937), (140, 4559946), (168, 3799955), (210, 3039964), (280, 2279973), (420, 1519982), (457, 1396920), (840, 759991), (914, 698460), (1371, 465640), (1663, 383880), (1828, 349230), (2285, 279384), (2742, 232820), (3199, 199560), (3326, 191940), (3656, 174615), (4570, 139692), (4989, 127960), (5484, 116410), (6398, 99780), (6652, 95970), (6855, 93128), (8315, 76776), (9140, 69846), (9597, 66520), (9978, 63980), (10968, 58205), (11641, 54840), (12796, 49890), (13304, 47985), (13710, 46564), (15995, 39912), (16630, 38388), (18280, 34923), (19194, 33260), (19956, 31990), (23282, 27420), (24945, 25592)]