20729080

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:344

約数の個数: 64

約数和(自身を含む): 49017600

約数和(自身を除く): 28288520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 73, 124, 146, 155, 229, 248, 292, 310, 365, 458, 584, 620, 730, 916, 1145, 1240, 1460, 1832, 2263, 2290, 2920, 4526, 4580, 7099, 9052, 9160, 11315, 14198, 16717, 18104, 22630, 28396, 33434, 35495, 45260, 56792, 66868, 70990, 83585, 90520, 133736, 141980, 167170, 283960, 334340, 518227, 668680, 1036454, 2072908, 2591135, 4145816, 5182270, 10364540, 20729080]

約数ペア:

[(1, 20729080), (2, 10364540), (4, 5182270), (5, 4145816), (8, 2591135), (10, 2072908), (20, 1036454), (31, 668680), (40, 518227), (62, 334340), (73, 283960), (124, 167170), (146, 141980), (155, 133736), (229, 90520), (248, 83585), (292, 70990), (310, 66868), (365, 56792), (458, 45260), (584, 35495), (620, 33434), (730, 28396), (916, 22630), (1145, 18104), (1240, 16717), (1460, 14198), (1832, 11315), (2263, 9160), (2290, 9052), (2920, 7099), (4526, 4580)]