201171920

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:460

約数の個数: 80

約数和(自身を含む): 479136000

約数和(自身を除く): 277964080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 139, 158, 229, 278, 316, 395, 458, 556, 632, 695, 790, 916, 1112, 1145, 1264, 1390, 1580, 1832, 2224, 2290, 2780, 3160, 3664, 4580, 5560, 6320, 9160, 10981, 11120, 18091, 18320, 21962, 31831, 36182, 43924, 54905, 63662, 72364, 87848, 90455, 109810, 127324, 144728, 159155, 175696, 180910, 219620, 254648, 289456, 318310, 361820, 439240, 509296, 636620, 723640, 878480, 1273240, 1447280, 2514649, 2546480, 5029298, 10058596, 12573245, 20117192, 25146490, 40234384, 50292980, 100585960, 201171920]

約数ペア:

[(1, 201171920), (2, 100585960), (4, 50292980), (5, 40234384), (8, 25146490), (10, 20117192), (16, 12573245), (20, 10058596), (40, 5029298), (79, 2546480), (80, 2514649), (139, 1447280), (158, 1273240), (229, 878480), (278, 723640), (316, 636620), (395, 509296), (458, 439240), (556, 361820), (632, 318310), (695, 289456), (790, 254648), (916, 219620), (1112, 180910), (1145, 175696), (1264, 159155), (1390, 144728), (1580, 127324), (1832, 109810), (2224, 90455), (2290, 87848), (2780, 72364), (3160, 63662), (3664, 54905), (4580, 43924), (5560, 36182), (6320, 31831), (9160, 21962), (10981, 18320), (11120, 18091)]