21097830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1151}}^1$

素因数の和:1221

約数の個数: 64

約数和(自身を含む): 55738368

約数和(自身を除く): 34640538

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 47, 65, 78, 94, 130, 141, 195, 235, 282, 390, 470, 611, 705, 1151, 1222, 1410, 1833, 2302, 3055, 3453, 3666, 5755, 6110, 6906, 9165, 11510, 14963, 17265, 18330, 29926, 34530, 44889, 54097, 74815, 89778, 108194, 149630, 162291, 224445, 270485, 324582, 448890, 540970, 703261, 811455, 1406522, 1622910, 2109783, 3516305, 4219566, 7032610, 10548915, 21097830]

約数ペア:

[(1, 21097830), (2, 10548915), (3, 7032610), (5, 4219566), (6, 3516305), (10, 2109783), (13, 1622910), (15, 1406522), (26, 811455), (30, 703261), (39, 540970), (47, 448890), (65, 324582), (78, 270485), (94, 224445), (130, 162291), (141, 149630), (195, 108194), (235, 89778), (282, 74815), (390, 54097), (470, 44889), (611, 34530), (705, 29926), (1151, 18330), (1222, 17265), (1410, 14963), (1833, 11510), (2302, 9165), (3055, 6906), (3453, 6110), (3666, 5755)]