388563920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{156679}}^1$

素因数の和:156723

約数の個数: 40

約数和(自身を含む): 932559360

約数和(自身を除く): 543995440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 156679, 313358, 626716, 783395, 1253432, 1566790, 2506864, 3133580, 4857049, 6267160, 9714098, 12534320, 19428196, 24285245, 38856392, 48570490, 77712784, 97140980, 194281960, 388563920]

約数ペア:

[(1, 388563920), (2, 194281960), (4, 97140980), (5, 77712784), (8, 48570490), (10, 38856392), (16, 24285245), (20, 19428196), (31, 12534320), (40, 9714098), (62, 6267160), (80, 4857049), (124, 3133580), (155, 2506864), (248, 1566790), (310, 1253432), (496, 783395), (620, 626716), (1240, 313358), (2480, 156679)]