20847690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5387}}^1$

素因数の和:5443

約数の個数: 48

約数和(自身を含む): 55474848

約数和(自身を除く): 34627158

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5387, 10774, 16161, 26935, 32322, 48483, 53870, 80805, 96966, 161610, 231641, 242415, 463282, 484830, 694923, 1158205, 1389846, 2084769, 2316410, 3474615, 4169538, 6949230, 10423845, 20847690]

約数ペア:

[(1, 20847690), (2, 10423845), (3, 6949230), (5, 4169538), (6, 3474615), (9, 2316410), (10, 2084769), (15, 1389846), (18, 1158205), (30, 694923), (43, 484830), (45, 463282), (86, 242415), (90, 231641), (129, 161610), (215, 96966), (258, 80805), (387, 53870), (430, 48483), (645, 32322), (774, 26935), (1290, 16161), (1935, 10774), (3870, 5387)]