18659420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1669}}^1$

素因数の和:1734

約数の個数: 48

約数和(自身を含む): 43206240

約数和(自身を除く): 24546820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 1669, 2236, 2795, 3338, 5590, 6676, 8345, 11180, 16690, 21697, 33380, 43394, 71767, 86788, 108485, 143534, 216970, 287068, 358835, 433940, 717670, 932971, 1435340, 1865942, 3731884, 4664855, 9329710, 18659420]

約数ペア:

[(1, 18659420), (2, 9329710), (4, 4664855), (5, 3731884), (10, 1865942), (13, 1435340), (20, 932971), (26, 717670), (43, 433940), (52, 358835), (65, 287068), (86, 216970), (130, 143534), (172, 108485), (215, 86788), (260, 71767), (430, 43394), (559, 33380), (860, 21697), (1118, 16690), (1669, 11180), (2236, 8345), (2795, 6676), (3338, 5590)]