21070400

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1013}}^1$

素因数の和:1048

約数の個数: 84

約数和(自身を含む): 55889652

約数和(自身を除く): 34819252

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 130, 160, 200, 208, 260, 320, 325, 400, 416, 520, 650, 800, 832, 1013, 1040, 1300, 1600, 2026, 2080, 2600, 4052, 4160, 5065, 5200, 8104, 10130, 10400, 13169, 16208, 20260, 20800, 25325, 26338, 32416, 40520, 50650, 52676, 64832, 65845, 81040, 101300, 105352, 131690, 162080, 202600, 210704, 263380, 324160, 329225, 405200, 421408, 526760, 658450, 810400, 842816, 1053520, 1316900, 1620800, 2107040, 2633800, 4214080, 5267600, 10535200, 21070400]

約数ペア:

[(1, 21070400), (2, 10535200), (4, 5267600), (5, 4214080), (8, 2633800), (10, 2107040), (13, 1620800), (16, 1316900), (20, 1053520), (25, 842816), (26, 810400), (32, 658450), (40, 526760), (50, 421408), (52, 405200), (64, 329225), (65, 324160), (80, 263380), (100, 210704), (104, 202600), (130, 162080), (160, 131690), (200, 105352), (208, 101300), (260, 81040), (320, 65845), (325, 64832), (400, 52676), (416, 50650), (520, 40520), (650, 32416), (800, 26338), (832, 25325), (1013, 20800), (1040, 20260), (1300, 16208), (1600, 13169), (2026, 10400), (2080, 10130), (2600, 8104), (4052, 5200), (4160, 5065)]