668811280

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{491773}}^1$

素因数の和:491803

約数の個数: 40

約数和(自身を含む): 1646459352

約数和(自身を除く): 977648072

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 491773, 983546, 1967092, 2458865, 3934184, 4917730, 7868368, 8360141, 9835460, 16720282, 19670920, 33440564, 39341840, 41800705, 66881128, 83601410, 133762256, 167202820, 334405640, 668811280]

約数ペア:

[(1, 668811280), (2, 334405640), (4, 167202820), (5, 133762256), (8, 83601410), (10, 66881128), (16, 41800705), (17, 39341840), (20, 33440564), (34, 19670920), (40, 16720282), (68, 9835460), (80, 8360141), (85, 7868368), (136, 4917730), (170, 3934184), (272, 2458865), (340, 1967092), (680, 983546), (1360, 491773)]