21630290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1$

素因数の和:347

約数の個数: 64

約数和(自身を含む): 46189440

約数和(自身を除く): 24559150

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 43, 55, 85, 86, 110, 170, 187, 215, 269, 374, 430, 473, 538, 731, 935, 946, 1345, 1462, 1870, 2365, 2690, 2959, 3655, 4573, 4730, 5918, 7310, 8041, 9146, 11567, 14795, 16082, 22865, 23134, 29590, 40205, 45730, 50303, 57835, 80410, 100606, 115670, 127237, 196639, 251515, 254474, 393278, 503030, 636185, 983195, 1272370, 1966390, 2163029, 4326058, 10815145, 21630290]

約数ペア:

[(1, 21630290), (2, 10815145), (5, 4326058), (10, 2163029), (11, 1966390), (17, 1272370), (22, 983195), (34, 636185), (43, 503030), (55, 393278), (85, 254474), (86, 251515), (110, 196639), (170, 127237), (187, 115670), (215, 100606), (269, 80410), (374, 57835), (430, 50303), (473, 45730), (538, 40205), (731, 29590), (935, 23134), (946, 22865), (1345, 16082), (1462, 14795), (1870, 11567), (2365, 9146), (2690, 8041), (2959, 7310), (3655, 5918), (4573, 4730)]