20805216400

素因数分解:

$2^4\times 5^2\times {\mathrm{1453}}^1\times {\mathrm{35797}}^1$

素因数の和:37268

約数の個数: 60

約数和(自身を含む): 50020330612

約数和(自身を除く): 29215114212

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 1453, 2906, 5812, 7265, 11624, 14530, 23248, 29060, 35797, 36325, 58120, 71594, 72650, 116240, 143188, 145300, 178985, 286376, 290600, 357970, 572752, 581200, 715940, 894925, 1431880, 1789850, 2863760, 3579700, 7159400, 14318800, 52013041, 104026082, 208052164, 260065205, 416104328, 520130410, 832208656, 1040260820, 1300326025, 2080521640, 2600652050, 4161043280, 5201304100, 10402608200, 20805216400]

約数ペア:

[(1, 20805216400), (2, 10402608200), (4, 5201304100), (5, 4161043280), (8, 2600652050), (10, 2080521640), (16, 1300326025), (20, 1040260820), (25, 832208656), (40, 520130410), (50, 416104328), (80, 260065205), (100, 208052164), (200, 104026082), (400, 52013041), (1453, 14318800), (2906, 7159400), (5812, 3579700), (7265, 2863760), (11624, 1789850), (14530, 1431880), (23248, 894925), (29060, 715940), (35797, 581200), (36325, 572752), (58120, 357970), (71594, 290600), (72650, 286376), (116240, 178985), (143188, 145300)]