18255770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{389}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 37444680

約数和(自身を除く): 19188910

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 361, 389, 494, 722, 778, 1235, 1805, 1945, 2470, 3610, 3890, 4693, 5057, 7391, 9386, 10114, 14782, 23465, 25285, 36955, 46930, 50570, 73910, 96083, 140429, 192166, 280858, 480415, 702145, 960830, 1404290, 1825577, 3651154, 9127885, 18255770]

約数ペア:

[(1, 18255770), (2, 9127885), (5, 3651154), (10, 1825577), (13, 1404290), (19, 960830), (26, 702145), (38, 480415), (65, 280858), (95, 192166), (130, 140429), (190, 96083), (247, 73910), (361, 50570), (389, 46930), (494, 36955), (722, 25285), (778, 23465), (1235, 14782), (1805, 10114), (1945, 9386), (2470, 7391), (3610, 5057), (3890, 4693)]