20189968120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{287279}}^1$

素因数の和:287548

約数の個数: 64

約数和(自身を含む): 52124083200

約数和(自身を除く): 31934115080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 251, 280, 502, 1004, 1255, 1757, 2008, 2510, 3514, 5020, 7028, 8785, 10040, 14056, 17570, 35140, 70280, 287279, 574558, 1149116, 1436395, 2010953, 2298232, 2872790, 4021906, 5745580, 8043812, 10054765, 11491160, 16087624, 20109530, 40219060, 72107029, 80438120, 144214058, 288428116, 360535145, 504749203, 576856232, 721070290, 1009498406, 1442140580, 2018996812, 2523746015, 2884281160, 4037993624, 5047492030, 10094984060, 20189968120]

約数ペア:

[(1, 20189968120), (2, 10094984060), (4, 5047492030), (5, 4037993624), (7, 2884281160), (8, 2523746015), (10, 2018996812), (14, 1442140580), (20, 1009498406), (28, 721070290), (35, 576856232), (40, 504749203), (56, 360535145), (70, 288428116), (140, 144214058), (251, 80438120), (280, 72107029), (502, 40219060), (1004, 20109530), (1255, 16087624), (1757, 11491160), (2008, 10054765), (2510, 8043812), (3514, 5745580), (5020, 4021906), (7028, 2872790), (8785, 2298232), (10040, 2010953), (14056, 1436395), (17570, 1149116), (35140, 574558), (70280, 287279)]