20020640

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{797}}^1$

素因数の和:969

約数の個数: 48

約数和(自身を含む): 47659752

約数和(自身を除く): 27639112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 785, 797, 1256, 1570, 1594, 2512, 3140, 3188, 3985, 5024, 6280, 6376, 7970, 12560, 12752, 15940, 25120, 25504, 31880, 63760, 125129, 127520, 250258, 500516, 625645, 1001032, 1251290, 2002064, 2502580, 4004128, 5005160, 10010320, 20020640]

約数ペア:

[(1, 20020640), (2, 10010320), (4, 5005160), (5, 4004128), (8, 2502580), (10, 2002064), (16, 1251290), (20, 1001032), (32, 625645), (40, 500516), (80, 250258), (157, 127520), (160, 125129), (314, 63760), (628, 31880), (785, 25504), (797, 25120), (1256, 15940), (1570, 12752), (1594, 12560), (2512, 7970), (3140, 6376), (3188, 6280), (3985, 5024)]