20120003320

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{379}}^1\times {\mathrm{21757}}^1$

素因数の和:22208

約数の個数: 64

約数和(自身を含む): 46135663200

約数和(自身を除く): 26015659880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 379, 488, 610, 758, 1220, 1516, 1895, 2440, 3032, 3790, 7580, 15160, 21757, 23119, 43514, 46238, 87028, 92476, 108785, 115595, 174056, 184952, 217570, 231190, 435140, 462380, 870280, 924760, 1327177, 2654354, 5308708, 6635885, 8245903, 10617416, 13271770, 16491806, 26543540, 32983612, 41229515, 53087080, 65967224, 82459030, 164918060, 329836120, 503000083, 1006000166, 2012000332, 2515000415, 4024000664, 5030000830, 10060001660, 20120003320]

約数ペア:

[(1, 20120003320), (2, 10060001660), (4, 5030000830), (5, 4024000664), (8, 2515000415), (10, 2012000332), (20, 1006000166), (40, 503000083), (61, 329836120), (122, 164918060), (244, 82459030), (305, 65967224), (379, 53087080), (488, 41229515), (610, 32983612), (758, 26543540), (1220, 16491806), (1516, 13271770), (1895, 10617416), (2440, 8245903), (3032, 6635885), (3790, 5308708), (7580, 2654354), (15160, 1327177), (21757, 924760), (23119, 870280), (43514, 462380), (46238, 435140), (87028, 231190), (92476, 217570), (108785, 184952), (115595, 174056)]