20512756520

素因数分解:

$2^3\times 5^1\times {\mathrm{19571}}^1\times {\mathrm{26203}}^1$

素因数の和:45785

約数の個数: 32

約数和(自身を含む): 46157821920

約数和(自身を除く): 25645065400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 19571, 26203, 39142, 52406, 78284, 97855, 104812, 131015, 156568, 195710, 209624, 262030, 391420, 524060, 782840, 1048120, 512818913, 1025637826, 2051275652, 2564094565, 4102551304, 5128189130, 10256378260, 20512756520]

約数ペア:

[(1, 20512756520), (2, 10256378260), (4, 5128189130), (5, 4102551304), (8, 2564094565), (10, 2051275652), (20, 1025637826), (40, 512818913), (19571, 1048120), (26203, 782840), (39142, 524060), (52406, 391420), (78284, 262030), (97855, 209624), (104812, 195710), (131015, 156568)]