20291208400

素因数分解:

$2^4\times 5^2\times {\mathrm{9109}}^1\times {\mathrm{5569}}^1$

素因数の和:14696

約数の個数: 60

約数和(自身を含む): 48763734700

約数和(自身を除く): 28472526300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 5569, 9109, 11138, 18218, 22276, 27845, 36436, 44552, 45545, 55690, 72872, 89104, 91090, 111380, 139225, 145744, 182180, 222760, 227725, 278450, 364360, 445520, 455450, 556900, 728720, 910900, 1113800, 1821800, 2227600, 3643600, 50728021, 101456042, 202912084, 253640105, 405824168, 507280210, 811648336, 1014560420, 1268200525, 2029120840, 2536401050, 4058241680, 5072802100, 10145604200, 20291208400]

約数ペア:

[(1, 20291208400), (2, 10145604200), (4, 5072802100), (5, 4058241680), (8, 2536401050), (10, 2029120840), (16, 1268200525), (20, 1014560420), (25, 811648336), (40, 507280210), (50, 405824168), (80, 253640105), (100, 202912084), (200, 101456042), (400, 50728021), (5569, 3643600), (9109, 2227600), (11138, 1821800), (18218, 1113800), (22276, 910900), (27845, 728720), (36436, 556900), (44552, 455450), (45545, 445520), (55690, 364360), (72872, 278450), (89104, 227725), (91090, 222760), (111380, 182180), (139225, 145744)]