21261690

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{26249}}^1$

素因数の和:26268

約数の個数: 40

約数和(自身を含む): 57172500

約数和(自身を除く): 35910810

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810, 26249, 52498, 78747, 131245, 157494, 236241, 262490, 393735, 472482, 708723, 787470, 1181205, 1417446, 2126169, 2362410, 3543615, 4252338, 7087230, 10630845, 21261690]

約数ペア:

[(1, 21261690), (2, 10630845), (3, 7087230), (5, 4252338), (6, 3543615), (9, 2362410), (10, 2126169), (15, 1417446), (18, 1181205), (27, 787470), (30, 708723), (45, 472482), (54, 393735), (81, 262490), (90, 236241), (135, 157494), (162, 131245), (270, 78747), (405, 52498), (810, 26249)]