72278680

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:436

約数の個数: 64

約数和(自身を含む): 167184000

約数和(自身を除く): 94905320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 89, 158, 178, 257, 316, 356, 395, 445, 514, 632, 712, 790, 890, 1028, 1285, 1580, 1780, 2056, 2570, 3160, 3560, 5140, 7031, 10280, 14062, 20303, 22873, 28124, 35155, 40606, 45746, 56248, 70310, 81212, 91492, 101515, 114365, 140620, 162424, 182984, 203030, 228730, 281240, 406060, 457460, 812120, 914920, 1806967, 3613934, 7227868, 9034835, 14455736, 18069670, 36139340, 72278680]

約数ペア:

[(1, 72278680), (2, 36139340), (4, 18069670), (5, 14455736), (8, 9034835), (10, 7227868), (20, 3613934), (40, 1806967), (79, 914920), (89, 812120), (158, 457460), (178, 406060), (257, 281240), (316, 228730), (356, 203030), (395, 182984), (445, 162424), (514, 140620), (632, 114365), (712, 101515), (790, 91492), (890, 81212), (1028, 70310), (1285, 56248), (1580, 45746), (1780, 40606), (2056, 35155), (2570, 28124), (3160, 22873), (3560, 20303), (5140, 14062), (7031, 10280)]