64685840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26083}}^1$

素因数の和:26127

約数の個数: 40

約数和(自身を含む): 155251968

約数和(自身を除く): 90566128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26083, 52166, 104332, 130415, 208664, 260830, 417328, 521660, 808573, 1043320, 1617146, 2086640, 3234292, 4042865, 6468584, 8085730, 12937168, 16171460, 32342920, 64685840]

約数ペア:

[(1, 64685840), (2, 32342920), (4, 16171460), (5, 12937168), (8, 8085730), (10, 6468584), (16, 4042865), (20, 3234292), (31, 2086640), (40, 1617146), (62, 1043320), (80, 808573), (124, 521660), (155, 417328), (248, 260830), (310, 208664), (496, 130415), (620, 104332), (1240, 52166), (2480, 26083)]