20797400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1$

素因数の和:469

約数の個数: 96

約数和(自身を含む): 54944400

約数和(自身を除く): 34147000

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 95, 100, 104, 130, 152, 190, 200, 247, 260, 325, 380, 421, 475, 494, 520, 650, 760, 842, 950, 988, 1235, 1300, 1684, 1900, 1976, 2105, 2470, 2600, 3368, 3800, 4210, 4940, 5473, 6175, 7999, 8420, 9880, 10525, 10946, 12350, 15998, 16840, 21050, 21892, 24700, 27365, 31996, 39995, 42100, 43784, 49400, 54730, 63992, 79990, 84200, 103987, 109460, 136825, 159980, 199975, 207974, 218920, 273650, 319960, 399950, 415948, 519935, 547300, 799900, 831896, 1039870, 1094600, 1599800, 2079740, 2599675, 4159480, 5199350, 10398700, 20797400]

約数ペア:

[(1, 20797400), (2, 10398700), (4, 5199350), (5, 4159480), (8, 2599675), (10, 2079740), (13, 1599800), (19, 1094600), (20, 1039870), (25, 831896), (26, 799900), (38, 547300), (40, 519935), (50, 415948), (52, 399950), (65, 319960), (76, 273650), (95, 218920), (100, 207974), (104, 199975), (130, 159980), (152, 136825), (190, 109460), (200, 103987), (247, 84200), (260, 79990), (325, 63992), (380, 54730), (421, 49400), (475, 43784), (494, 42100), (520, 39995), (650, 31996), (760, 27365), (842, 24700), (950, 21892), (988, 21050), (1235, 16840), (1300, 15998), (1684, 12350), (1900, 10946), (1976, 10525), (2105, 9880), (2470, 8420), (2600, 7999), (3368, 6175), (3800, 5473), (4210, 4940)]