18631990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{433}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 36310176

約数和(自身を除く): 17678186

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 331, 433, 662, 866, 1655, 2165, 3310, 4303, 4330, 5629, 8606, 11258, 21515, 28145, 43030, 56290, 143323, 286646, 716615, 1433230, 1863199, 3726398, 9315995, 18631990]

約数ペア:

[(1, 18631990), (2, 9315995), (5, 3726398), (10, 1863199), (13, 1433230), (26, 716615), (65, 286646), (130, 143323), (331, 56290), (433, 43030), (662, 28145), (866, 21515), (1655, 11258), (2165, 8606), (3310, 5629), (4303, 4330)]