86991220

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{18199}}^1$

素因数の和:18447

約数の個数: 24

約数和(自身を含む): 183456000

約数和(自身を除く): 96464780

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 4780, 18199, 36398, 72796, 90995, 181990, 363980, 4349561, 8699122, 17398244, 21747805, 43495610, 86991220]

約数ペア:

[(1, 86991220), (2, 43495610), (4, 21747805), (5, 17398244), (10, 8699122), (20, 4349561), (239, 363980), (478, 181990), (956, 90995), (1195, 72796), (2390, 36398), (4780, 18199)]