420100640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{138191}}^1$

素因数の和:138225

約数の個数: 48

約数和(自身を含む): 1044731520

約数和(自身を除く): 624630880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 138191, 276382, 552764, 690955, 1105528, 1381910, 2211056, 2625629, 2763820, 4422112, 5251258, 5527640, 10502516, 11055280, 13128145, 21005032, 22110560, 26256290, 42010064, 52512580, 84020128, 105025160, 210050320, 420100640]

約数ペア:

[(1, 420100640), (2, 210050320), (4, 105025160), (5, 84020128), (8, 52512580), (10, 42010064), (16, 26256290), (19, 22110560), (20, 21005032), (32, 13128145), (38, 11055280), (40, 10502516), (76, 5527640), (80, 5251258), (95, 4422112), (152, 2763820), (160, 2625629), (190, 2211056), (304, 1381910), (380, 1105528), (608, 690955), (760, 552764), (1520, 276382), (3040, 138191)]