18874480

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1801}}^1$

素因数の和:1945

約数の個数: 40

約数和(自身を含む): 44242704

約数和(自身を除く): 25368224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 1801, 2096, 2620, 3602, 5240, 7204, 9005, 10480, 14408, 18010, 28816, 36020, 72040, 144080, 235931, 471862, 943724, 1179655, 1887448, 2359310, 3774896, 4718620, 9437240, 18874480]

約数ペア:

[(1, 18874480), (2, 9437240), (4, 4718620), (5, 3774896), (8, 2359310), (10, 1887448), (16, 1179655), (20, 943724), (40, 471862), (80, 235931), (131, 144080), (262, 72040), (524, 36020), (655, 28816), (1048, 18010), (1310, 14408), (1801, 10480), (2096, 9005), (2620, 7204), (3602, 5240)]