21543998

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{691}}^1$

素因数の和:848

約数の個数: 32

約数和(自身を含む): 39460608

約数和(自身を除く): 17916610

約数列:

[1, 2, 7, 14, 17, 34, 119, 131, 238, 262, 691, 917, 1382, 1834, 2227, 4454, 4837, 9674, 11747, 15589, 23494, 31178, 82229, 90521, 164458, 181042, 633647, 1267294, 1538857, 3077714, 10771999, 21543998]

約数ペア:

[(1, 21543998), (2, 10771999), (7, 3077714), (14, 1538857), (17, 1267294), (34, 633647), (119, 181042), (131, 164458), (238, 90521), (262, 82229), (691, 31178), (917, 23494), (1382, 15589), (1834, 11747), (2227, 9674), (4454, 4837)]