20778815538

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{280121}}^1$

素因数の和:280459

約数の個数: 48

約数和(自身を含む): 48637022616

約数和(自身を除く): 27858207078

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 317, 634, 951, 1902, 2853, 4121, 5706, 8242, 12363, 24726, 37089, 74178, 280121, 560242, 840363, 1680726, 2521089, 3641573, 5042178, 7283146, 10924719, 21849438, 32774157, 65548314, 88798357, 177596714, 266395071, 532790142, 799185213, 1154378641, 1598370426, 2308757282, 3463135923, 6926271846, 10389407769, 20778815538]

約数ペア:

[(1, 20778815538), (2, 10389407769), (3, 6926271846), (6, 3463135923), (9, 2308757282), (13, 1598370426), (18, 1154378641), (26, 799185213), (39, 532790142), (78, 266395071), (117, 177596714), (234, 88798357), (317, 65548314), (634, 32774157), (951, 21849438), (1902, 10924719), (2853, 7283146), (4121, 5042178), (5706, 3641573), (8242, 2521089), (12363, 1680726), (24726, 840363), (37089, 560242), (74178, 280121)]