20785700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{271}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 49580160

約数和(自身を除く): 28794460

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 59, 65, 100, 118, 130, 236, 260, 271, 295, 325, 542, 590, 650, 767, 1084, 1180, 1300, 1355, 1475, 1534, 2710, 2950, 3068, 3523, 3835, 5420, 5900, 6775, 7046, 7670, 13550, 14092, 15340, 15989, 17615, 19175, 27100, 31978, 35230, 38350, 63956, 70460, 76700, 79945, 88075, 159890, 176150, 207857, 319780, 352300, 399725, 415714, 799450, 831428, 1039285, 1598900, 2078570, 4157140, 5196425, 10392850, 20785700]

約数ペア:

[(1, 20785700), (2, 10392850), (4, 5196425), (5, 4157140), (10, 2078570), (13, 1598900), (20, 1039285), (25, 831428), (26, 799450), (50, 415714), (52, 399725), (59, 352300), (65, 319780), (100, 207857), (118, 176150), (130, 159890), (236, 88075), (260, 79945), (271, 76700), (295, 70460), (325, 63956), (542, 38350), (590, 35230), (650, 31978), (767, 27100), (1084, 19175), (1180, 17615), (1300, 15989), (1355, 15340), (1475, 14092), (1534, 13550), (2710, 7670), (2950, 7046), (3068, 6775), (3523, 5900), (3835, 5420)]