21300760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1$

素因数の和:197

約数の個数: 96

約数和(自身を含む): 54548640

約数和(自身を除く): 33247880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 137, 169, 184, 230, 260, 274, 299, 338, 460, 520, 548, 598, 676, 685, 845, 920, 1096, 1196, 1352, 1370, 1495, 1690, 1781, 2392, 2740, 2990, 3151, 3380, 3562, 3887, 5480, 5980, 6302, 6760, 7124, 7774, 8905, 11960, 12604, 14248, 15548, 15755, 17810, 19435, 23153, 25208, 31096, 31510, 35620, 38870, 40963, 46306, 63020, 71240, 77740, 81926, 92612, 115765, 126040, 155480, 163852, 185224, 204815, 231530, 327704, 409630, 463060, 532519, 819260, 926120, 1065038, 1638520, 2130076, 2662595, 4260152, 5325190, 10650380, 21300760]

約数ペア:

[(1, 21300760), (2, 10650380), (4, 5325190), (5, 4260152), (8, 2662595), (10, 2130076), (13, 1638520), (20, 1065038), (23, 926120), (26, 819260), (40, 532519), (46, 463060), (52, 409630), (65, 327704), (92, 231530), (104, 204815), (115, 185224), (130, 163852), (137, 155480), (169, 126040), (184, 115765), (230, 92612), (260, 81926), (274, 77740), (299, 71240), (338, 63020), (460, 46306), (520, 40963), (548, 38870), (598, 35620), (676, 31510), (685, 31096), (845, 25208), (920, 23153), (1096, 19435), (1196, 17810), (1352, 15755), (1370, 15548), (1495, 14248), (1690, 12604), (1781, 11960), (2392, 8905), (2740, 7774), (2990, 7124), (3151, 6760), (3380, 6302), (3562, 5980), (3887, 5480)]