81661998

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{167}}^1\times {\mathrm{239}}^1$

素因数の和:453

約数の個数: 64

約数和(自身を含む): 185794560

約数和(自身を除く): 104132562

約数列:

[1, 2, 3, 6, 11, 22, 31, 33, 62, 66, 93, 167, 186, 239, 334, 341, 478, 501, 682, 717, 1002, 1023, 1434, 1837, 2046, 2629, 3674, 5177, 5258, 5511, 7409, 7887, 10354, 11022, 14818, 15531, 15774, 22227, 31062, 39913, 44454, 56947, 79826, 81499, 113894, 119739, 162998, 170841, 239478, 244497, 341682, 439043, 488994, 878086, 1237303, 1317129, 2474606, 2634258, 3711909, 7423818, 13610333, 27220666, 40830999, 81661998]

約数ペア:

[(1, 81661998), (2, 40830999), (3, 27220666), (6, 13610333), (11, 7423818), (22, 3711909), (31, 2634258), (33, 2474606), (62, 1317129), (66, 1237303), (93, 878086), (167, 488994), (186, 439043), (239, 341682), (334, 244497), (341, 239478), (478, 170841), (501, 162998), (682, 119739), (717, 113894), (1002, 81499), (1023, 79826), (1434, 56947), (1837, 44454), (2046, 39913), (2629, 31062), (3674, 22227), (5177, 15774), (5258, 15531), (5511, 14818), (7409, 11022), (7887, 10354)]