21706503

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3457}}^1$

素因数の和:3503

約数の個数: 32

約数和(自身を含む): 37180416

約数和(自身を除く): 15473913

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 897, 2093, 3457, 6279, 10371, 24199, 44941, 72597, 79511, 134823, 238533, 314587, 556577, 943761, 1033643, 1669731, 3100929, 7235501, 21706503]

約数ペア:

[(1, 21706503), (3, 7235501), (7, 3100929), (13, 1669731), (21, 1033643), (23, 943761), (39, 556577), (69, 314587), (91, 238533), (161, 134823), (273, 79511), (299, 72597), (483, 44941), (897, 24199), (2093, 10371), (3457, 6279)]