18951790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{457}}^1$

素因数の和:517

約数の個数: 64

約数和(自身を含む): 41549760

約数和(自身を除く): 22597970

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 29, 55, 58, 65, 110, 130, 143, 145, 286, 290, 319, 377, 457, 638, 715, 754, 914, 1430, 1595, 1885, 2285, 3190, 3770, 4147, 4570, 5027, 5941, 8294, 10054, 11882, 13253, 20735, 25135, 26506, 29705, 41470, 50270, 59410, 65351, 66265, 130702, 132530, 145783, 172289, 291566, 326755, 344578, 653510, 728915, 861445, 1457830, 1722890, 1895179, 3790358, 9475895, 18951790]

約数ペア:

[(1, 18951790), (2, 9475895), (5, 3790358), (10, 1895179), (11, 1722890), (13, 1457830), (22, 861445), (26, 728915), (29, 653510), (55, 344578), (58, 326755), (65, 291566), (110, 172289), (130, 145783), (143, 132530), (145, 130702), (286, 66265), (290, 65351), (319, 59410), (377, 50270), (457, 41470), (638, 29705), (715, 26506), (754, 25135), (914, 20735), (1430, 13253), (1595, 11882), (1885, 10054), (2285, 8294), (3190, 5941), (3770, 5027), (4147, 4570)]