128537980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{105359}}^1$

素因数の和:105429

約数の個数: 24

約数和(自身を含む): 274357440

約数和(自身を除く): 145819460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 105359, 210718, 421436, 526795, 1053590, 2107180, 6426899, 12853798, 25707596, 32134495, 64268990, 128537980]

約数ペア:

[(1, 128537980), (2, 64268990), (4, 32134495), (5, 25707596), (10, 12853798), (20, 6426899), (61, 2107180), (122, 1053590), (244, 526795), (305, 421436), (610, 210718), (1220, 105359)]