31747720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25603}}^1$

素因数の和:25645

約数の個数: 32

約数和(自身を含む): 73739520

約数和(自身を除く): 41991800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 25603, 51206, 102412, 128015, 204824, 256030, 512060, 793693, 1024120, 1587386, 3174772, 3968465, 6349544, 7936930, 15873860, 31747720]

約数ペア:

[(1, 31747720), (2, 15873860), (4, 7936930), (5, 6349544), (8, 3968465), (10, 3174772), (20, 1587386), (31, 1024120), (40, 793693), (62, 512060), (124, 256030), (155, 204824), (248, 128015), (310, 102412), (620, 51206), (1240, 25603)]