81885260

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{457}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 188974464

約数和(自身を除く): 107089204

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 289, 310, 340, 457, 527, 578, 620, 914, 1054, 1156, 1445, 1828, 2108, 2285, 2635, 2890, 4570, 5270, 5780, 7769, 8959, 9140, 10540, 14167, 15538, 17918, 28334, 31076, 35836, 38845, 44795, 56668, 70835, 77690, 89590, 132073, 141670, 155380, 179180, 240839, 264146, 283340, 481678, 528292, 660365, 963356, 1204195, 1320730, 2408390, 2641460, 4094263, 4816780, 8188526, 16377052, 20471315, 40942630, 81885260]

約数ペア:

[(1, 81885260), (2, 40942630), (4, 20471315), (5, 16377052), (10, 8188526), (17, 4816780), (20, 4094263), (31, 2641460), (34, 2408390), (62, 1320730), (68, 1204195), (85, 963356), (124, 660365), (155, 528292), (170, 481678), (289, 283340), (310, 264146), (340, 240839), (457, 179180), (527, 155380), (578, 141670), (620, 132073), (914, 89590), (1054, 77690), (1156, 70835), (1445, 56668), (1828, 44795), (2108, 38845), (2285, 35836), (2635, 31076), (2890, 28334), (4570, 17918), (5270, 15538), (5780, 14167), (7769, 10540), (8959, 9140)]