20989170

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7523}}^1$

素因数の和:7567

約数の個数: 48

約数和(自身を含む): 56339712

約数和(自身を除く): 35350542

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7523, 15046, 22569, 37615, 45138, 67707, 75230, 112845, 135414, 225690, 233213, 338535, 466426, 677070, 699639, 1166065, 1399278, 2098917, 2332130, 3498195, 4197834, 6996390, 10494585, 20989170]

約数ペア:

[(1, 20989170), (2, 10494585), (3, 6996390), (5, 4197834), (6, 3498195), (9, 2332130), (10, 2098917), (15, 1399278), (18, 1166065), (30, 699639), (31, 677070), (45, 466426), (62, 338535), (90, 233213), (93, 225690), (155, 135414), (186, 112845), (279, 75230), (310, 67707), (465, 45138), (558, 37615), (930, 22569), (1395, 15046), (2790, 7523)]