21573520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8699}}^1$

素因数の和:8743

約数の個数: 40

約数和(自身を含む): 51782400

約数和(自身を除く): 30208880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8699, 17398, 34796, 43495, 69592, 86990, 139184, 173980, 269669, 347960, 539338, 695920, 1078676, 1348345, 2157352, 2696690, 4314704, 5393380, 10786760, 21573520]

約数ペア:

[(1, 21573520), (2, 10786760), (4, 5393380), (5, 4314704), (8, 2696690), (10, 2157352), (16, 1348345), (20, 1078676), (31, 695920), (40, 539338), (62, 347960), (80, 269669), (124, 173980), (155, 139184), (248, 86990), (310, 69592), (496, 43495), (620, 34796), (1240, 17398), (2480, 8699)]