20538320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23339}}^1$

素因数の和:23363

約数の個数: 40

約数和(自身を含む): 52094880

約数和(自身を除く): 31556560

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23339, 46678, 93356, 116695, 186712, 233390, 256729, 373424, 466780, 513458, 933560, 1026916, 1283645, 1867120, 2053832, 2567290, 4107664, 5134580, 10269160, 20538320]

約数ペア:

[(1, 20538320), (2, 10269160), (4, 5134580), (5, 4107664), (8, 2567290), (10, 2053832), (11, 1867120), (16, 1283645), (20, 1026916), (22, 933560), (40, 513458), (44, 466780), (55, 373424), (80, 256729), (88, 233390), (110, 186712), (176, 116695), (220, 93356), (440, 46678), (880, 23339)]