20174919940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{443}}^1\times {\mathrm{46471}}^1$

素因数の和:46937

約数の個数: 72

約数和(自身を含む): 49396761792

約数和(自身を除く): 29221841852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 443, 490, 886, 980, 1772, 2215, 3101, 4430, 6202, 8860, 12404, 15505, 21707, 31010, 43414, 46471, 62020, 86828, 92942, 108535, 185884, 217070, 232355, 325297, 434140, 464710, 650594, 929420, 1301188, 1626485, 2277079, 3252970, 4554158, 6505940, 9108316, 11385395, 20586653, 22770790, 41173306, 45541580, 82346612, 102933265, 144106571, 205866530, 288213142, 411733060, 576426284, 720532855, 1008745997, 1441065710, 2017491994, 2882131420, 4034983988, 5043729985, 10087459970, 20174919940]

約数ペア:

[(1, 20174919940), (2, 10087459970), (4, 5043729985), (5, 4034983988), (7, 2882131420), (10, 2017491994), (14, 1441065710), (20, 1008745997), (28, 720532855), (35, 576426284), (49, 411733060), (70, 288213142), (98, 205866530), (140, 144106571), (196, 102933265), (245, 82346612), (443, 45541580), (490, 41173306), (886, 22770790), (980, 20586653), (1772, 11385395), (2215, 9108316), (3101, 6505940), (4430, 4554158), (6202, 3252970), (8860, 2277079), (12404, 1626485), (15505, 1301188), (21707, 929420), (31010, 650594), (43414, 464710), (46471, 434140), (62020, 325297), (86828, 232355), (92942, 217070), (108535, 185884)]