18627366920

素因数分解:

$2^3\times 5^1\times {\mathrm{6521}}^1\times {\mathrm{71413}}^1$

素因数の和:77945

約数の個数: 32

約数和(自身を含む): 41918589720

約数和(自身を除く): 23291222800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6521, 13042, 26084, 32605, 52168, 65210, 71413, 130420, 142826, 260840, 285652, 357065, 571304, 714130, 1428260, 2856520, 465684173, 931368346, 1862736692, 2328420865, 3725473384, 4656841730, 9313683460, 18627366920]

約数ペア:

[(1, 18627366920), (2, 9313683460), (4, 4656841730), (5, 3725473384), (8, 2328420865), (10, 1862736692), (20, 931368346), (40, 465684173), (6521, 2856520), (13042, 1428260), (26084, 714130), (32605, 571304), (52168, 357065), (65210, 285652), (71413, 260840), (130420, 142826)]