18989230

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 48

約数和(自身を含む): 38162880

約数和(自身を除く): 19173650

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 79, 86, 130, 158, 215, 395, 430, 559, 790, 1027, 1118, 1849, 2054, 2795, 3397, 3698, 5135, 5590, 6794, 9245, 10270, 16985, 18490, 24037, 33970, 44161, 48074, 88322, 120185, 146071, 220805, 240370, 292142, 441610, 730355, 1460710, 1898923, 3797846, 9494615, 18989230]

約数ペア:

[(1, 18989230), (2, 9494615), (5, 3797846), (10, 1898923), (13, 1460710), (26, 730355), (43, 441610), (65, 292142), (79, 240370), (86, 220805), (130, 146071), (158, 120185), (215, 88322), (395, 48074), (430, 44161), (559, 33970), (790, 24037), (1027, 18490), (1118, 16985), (1849, 10270), (2054, 9245), (2795, 6794), (3397, 5590), (3698, 5135)]