18620320

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4013}}^1$

素因数の和:4057

約数の個数: 48

約数和(自身を含む): 45518760

約数和(自身を除く): 26898440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4013, 4640, 8026, 16052, 20065, 32104, 40130, 64208, 80260, 116377, 128416, 160520, 232754, 321040, 465508, 581885, 642080, 931016, 1163770, 1862032, 2327540, 3724064, 4655080, 9310160, 18620320]

約数ペア:

[(1, 18620320), (2, 9310160), (4, 4655080), (5, 3724064), (8, 2327540), (10, 1862032), (16, 1163770), (20, 931016), (29, 642080), (32, 581885), (40, 465508), (58, 321040), (80, 232754), (116, 160520), (145, 128416), (160, 116377), (232, 80260), (290, 64208), (464, 40130), (580, 32104), (928, 20065), (1160, 16052), (2320, 8026), (4013, 4640)]