1640883945

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{221891}}^1$

素因数の和:221945

約数の個数: 32

約数和(自身を含む): 2875720320

約数和(自身を除く): 1234836375

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 255, 435, 493, 1479, 2465, 7395, 221891, 665673, 1109455, 3328365, 3772147, 6434839, 11316441, 18860735, 19304517, 32174195, 56582205, 96522585, 109392263, 328176789, 546961315, 1640883945]

約数ペア:

[(1, 1640883945), (3, 546961315), (5, 328176789), (15, 109392263), (17, 96522585), (29, 56582205), (51, 32174195), (85, 19304517), (87, 18860735), (145, 11316441), (255, 6434839), (435, 3772147), (493, 3328365), (1479, 1109455), (2465, 665673), (7395, 221891)]