28905695

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 46884096

約数和(自身を除く): 17978401

約数列:

[1, 5, 7, 13, 17, 35, 37, 65, 85, 91, 101, 119, 185, 221, 259, 455, 481, 505, 595, 629, 707, 1105, 1295, 1313, 1547, 1717, 2405, 3145, 3367, 3535, 3737, 4403, 6565, 7735, 8177, 8585, 9191, 12019, 16835, 18685, 22015, 22321, 26159, 40885, 45955, 48581, 57239, 60095, 63529, 111605, 130795, 156247, 242905, 286195, 317645, 340067, 444703, 781235, 825877, 1700335, 2223515, 4129385, 5781139, 28905695]

約数ペア:

[(1, 28905695), (5, 5781139), (7, 4129385), (13, 2223515), (17, 1700335), (35, 825877), (37, 781235), (65, 444703), (85, 340067), (91, 317645), (101, 286195), (119, 242905), (185, 156247), (221, 130795), (259, 111605), (455, 63529), (481, 60095), (505, 57239), (595, 48581), (629, 45955), (707, 40885), (1105, 26159), (1295, 22321), (1313, 22015), (1547, 18685), (1717, 16835), (2405, 12019), (3145, 9191), (3367, 8585), (3535, 8177), (3737, 7735), (4403, 6565)]