649680464

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{421}}^1\times {\mathrm{2243}}^1$

素因数の和:2715

約数の個数: 40

約数和(自身を含む): 1291664352

約数和(自身を除く): 641983888

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 421, 688, 842, 1684, 2243, 3368, 4486, 6736, 8972, 17944, 18103, 35888, 36206, 72412, 96449, 144824, 192898, 289648, 385796, 771592, 944303, 1543184, 1888606, 3777212, 7554424, 15108848, 40605029, 81210058, 162420116, 324840232, 649680464]

約数ペア:

[(1, 649680464), (2, 324840232), (4, 162420116), (8, 81210058), (16, 40605029), (43, 15108848), (86, 7554424), (172, 3777212), (344, 1888606), (421, 1543184), (688, 944303), (842, 771592), (1684, 385796), (2243, 289648), (3368, 192898), (4486, 144824), (6736, 96449), (8972, 72412), (17944, 36206), (18103, 35888)]