128343140

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1\times {\mathrm{521}}^1$

素因数の和:752

約数の個数: 48

約数和(自身を含む): 274926960

約数和(自身を除く): 146583820

約数列:

[1, 2, 4, 5, 10, 20, 109, 113, 218, 226, 436, 452, 521, 545, 565, 1042, 1090, 1130, 2084, 2180, 2260, 2605, 5210, 10420, 12317, 24634, 49268, 56789, 58873, 61585, 113578, 117746, 123170, 227156, 235492, 246340, 283945, 294365, 567890, 588730, 1135780, 1177460, 6417157, 12834314, 25668628, 32085785, 64171570, 128343140]

約数ペア:

[(1, 128343140), (2, 64171570), (4, 32085785), (5, 25668628), (10, 12834314), (20, 6417157), (109, 1177460), (113, 1135780), (218, 588730), (226, 567890), (436, 294365), (452, 283945), (521, 246340), (545, 235492), (565, 227156), (1042, 123170), (1090, 117746), (1130, 113578), (2084, 61585), (2180, 58873), (2260, 56789), (2605, 49268), (5210, 24634), (10420, 12317)]