64725520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26099}}^1$

素因数の和:26143

約数の個数: 40

約数和(自身を含む): 155347200

約数和(自身を除く): 90621680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26099, 52198, 104396, 130495, 208792, 260990, 417584, 521980, 809069, 1043960, 1618138, 2087920, 3236276, 4045345, 6472552, 8090690, 12945104, 16181380, 32362760, 64725520]

約数ペア:

[(1, 64725520), (2, 32362760), (4, 16181380), (5, 12945104), (8, 8090690), (10, 6472552), (16, 4045345), (20, 3236276), (31, 2087920), (40, 1618138), (62, 1043960), (80, 809069), (124, 521980), (155, 417584), (248, 260990), (310, 208792), (496, 130495), (620, 104396), (1240, 52198), (2480, 26099)]