21596900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{449}}^1$

素因数の和:513

約数の個数: 72

約数和(自身を含む): 51949800

約数和(自身を除く): 30352900

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 37, 50, 52, 65, 74, 100, 130, 148, 185, 260, 325, 370, 449, 481, 650, 740, 898, 925, 962, 1300, 1796, 1850, 1924, 2245, 2405, 3700, 4490, 4810, 5837, 8980, 9620, 11225, 11674, 12025, 16613, 22450, 23348, 24050, 29185, 33226, 44900, 48100, 58370, 66452, 83065, 116740, 145925, 166130, 215969, 291850, 332260, 415325, 431938, 583700, 830650, 863876, 1079845, 1661300, 2159690, 4319380, 5399225, 10798450, 21596900]

約数ペア:

[(1, 21596900), (2, 10798450), (4, 5399225), (5, 4319380), (10, 2159690), (13, 1661300), (20, 1079845), (25, 863876), (26, 830650), (37, 583700), (50, 431938), (52, 415325), (65, 332260), (74, 291850), (100, 215969), (130, 166130), (148, 145925), (185, 116740), (260, 83065), (325, 66452), (370, 58370), (449, 48100), (481, 44900), (650, 33226), (740, 29185), (898, 24050), (925, 23348), (962, 22450), (1300, 16613), (1796, 12025), (1850, 11674), (1924, 11225), (2245, 9620), (2405, 8980), (3700, 5837), (4490, 4810)]