2457990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{881}}^1$

素因数の和:925

約数の個数: 48

約数和(自身を含む): 6604416

約数和(自身を除く): 4146426

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 881, 930, 1395, 1762, 2643, 2790, 4405, 5286, 7929, 8810, 13215, 15858, 26430, 27311, 39645, 54622, 79290, 81933, 136555, 163866, 245799, 273110, 409665, 491598, 819330, 1228995, 2457990]

約数ペア:

[(1, 2457990), (2, 1228995), (3, 819330), (5, 491598), (6, 409665), (9, 273110), (10, 245799), (15, 163866), (18, 136555), (30, 81933), (31, 79290), (45, 54622), (62, 39645), (90, 27311), (93, 26430), (155, 15858), (186, 13215), (279, 8810), (310, 7929), (465, 5286), (558, 4405), (881, 2790), (930, 2643), (1395, 1762)]