221007100

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{499}}^1$

素因数の和:659

約数の個数: 72

約数和(自身を含む): 496496000

約数和(自身を除く): 275488900

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 103, 172, 206, 215, 412, 430, 499, 515, 860, 998, 1030, 1075, 1996, 2060, 2150, 2495, 2575, 4300, 4429, 4990, 5150, 8858, 9980, 10300, 12475, 17716, 21457, 22145, 24950, 42914, 44290, 49900, 51397, 85828, 88580, 102794, 107285, 110725, 205588, 214570, 221450, 256985, 429140, 442900, 513970, 536425, 1027940, 1072850, 1284925, 2145700, 2210071, 2569850, 4420142, 5139700, 8840284, 11050355, 22100710, 44201420, 55251775, 110503550, 221007100]

約数ペア:

[(1, 221007100), (2, 110503550), (4, 55251775), (5, 44201420), (10, 22100710), (20, 11050355), (25, 8840284), (43, 5139700), (50, 4420142), (86, 2569850), (100, 2210071), (103, 2145700), (172, 1284925), (206, 1072850), (215, 1027940), (412, 536425), (430, 513970), (499, 442900), (515, 429140), (860, 256985), (998, 221450), (1030, 214570), (1075, 205588), (1996, 110725), (2060, 107285), (2150, 102794), (2495, 88580), (2575, 85828), (4300, 51397), (4429, 49900), (4990, 44290), (5150, 42914), (8858, 24950), (9980, 22145), (10300, 21457), (12475, 17716)]