31639375

素因数分解:

$5^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 40

約数和(自身を含む): 43186176

約数和(自身を除く): 11546801

約数列:

[1, 5, 23, 25, 31, 71, 115, 125, 155, 355, 575, 625, 713, 775, 1633, 1775, 2201, 2875, 3565, 3875, 8165, 8875, 11005, 14375, 17825, 19375, 40825, 44375, 50623, 55025, 89125, 204125, 253115, 275125, 445625, 1020625, 1265575, 1375625, 6327875, 31639375]

約数ペア:

[(1, 31639375), (5, 6327875), (23, 1375625), (25, 1265575), (31, 1020625), (71, 445625), (115, 275125), (125, 253115), (155, 204125), (355, 89125), (575, 55025), (625, 50623), (713, 44375), (775, 40825), (1633, 19375), (1775, 17825), (2201, 14375), (2875, 11005), (3565, 8875), (3875, 8165)]