168313420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{157}}^1\times {\mathrm{443}}^1$

素因数の和:631

約数の個数: 72

約数和(自身を含む): 391869072

約数和(自身を除く): 223555652

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 157, 220, 242, 314, 443, 484, 605, 628, 785, 886, 1210, 1570, 1727, 1772, 2215, 2420, 3140, 3454, 4430, 4873, 6908, 8635, 8860, 9746, 17270, 18997, 19492, 24365, 34540, 37994, 48730, 53603, 69551, 75988, 94985, 97460, 107206, 139102, 189970, 214412, 268015, 278204, 347755, 379940, 536030, 695510, 765061, 1072060, 1391020, 1530122, 3060244, 3825305, 7650610, 8415671, 15301220, 16831342, 33662684, 42078355, 84156710, 168313420]

約数ペア:

[(1, 168313420), (2, 84156710), (4, 42078355), (5, 33662684), (10, 16831342), (11, 15301220), (20, 8415671), (22, 7650610), (44, 3825305), (55, 3060244), (110, 1530122), (121, 1391020), (157, 1072060), (220, 765061), (242, 695510), (314, 536030), (443, 379940), (484, 347755), (605, 278204), (628, 268015), (785, 214412), (886, 189970), (1210, 139102), (1570, 107206), (1727, 97460), (1772, 94985), (2215, 75988), (2420, 69551), (3140, 53603), (3454, 48730), (4430, 37994), (4873, 34540), (6908, 24365), (8635, 19492), (8860, 18997), (9746, 17270)]