215687640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{256771}}^1$

素因数の和:256792

約数の個数: 64

約数和(自身を含む): 739503360

約数和(自身を除く): 523815720

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, 840, 256771, 513542, 770313, 1027084, 1283855, 1540626, 1797397, 2054168, 2567710, 3081252, 3594794, 3851565, 5135420, 5392191, 6162504, 7189588, 7703130, 8986985, 10270840, 10784382, 14379176, 15406260, 17973970, 21568764, 26960955, 30812520, 35947940, 43137528, 53921910, 71895880, 107843820, 215687640]

約数ペア:

[(1, 215687640), (2, 107843820), (3, 71895880), (4, 53921910), (5, 43137528), (6, 35947940), (7, 30812520), (8, 26960955), (10, 21568764), (12, 17973970), (14, 15406260), (15, 14379176), (20, 10784382), (21, 10270840), (24, 8986985), (28, 7703130), (30, 7189588), (35, 6162504), (40, 5392191), (42, 5135420), (56, 3851565), (60, 3594794), (70, 3081252), (84, 2567710), (105, 2054168), (120, 1797397), (140, 1540626), (168, 1283855), (210, 1027084), (280, 770313), (420, 513542), (840, 256771)]