81578210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{739}}^1$

素因数の和:855

約数の個数: 64

約数和(自身を含む): 179020800

約数和(自身を除く): 97442590

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 83, 95, 133, 166, 190, 266, 415, 581, 665, 739, 830, 1162, 1330, 1478, 1577, 2905, 3154, 3695, 5173, 5810, 7390, 7885, 10346, 11039, 14041, 15770, 22078, 25865, 28082, 51730, 55195, 61337, 70205, 98287, 110390, 122674, 140410, 196574, 306685, 429359, 491435, 613370, 858718, 982870, 1165403, 2146795, 2330806, 4293590, 5827015, 8157821, 11654030, 16315642, 40789105, 81578210]

約数ペア:

[(1, 81578210), (2, 40789105), (5, 16315642), (7, 11654030), (10, 8157821), (14, 5827015), (19, 4293590), (35, 2330806), (38, 2146795), (70, 1165403), (83, 982870), (95, 858718), (133, 613370), (166, 491435), (190, 429359), (266, 306685), (415, 196574), (581, 140410), (665, 122674), (739, 110390), (830, 98287), (1162, 70205), (1330, 61337), (1478, 55195), (1577, 51730), (2905, 28082), (3154, 25865), (3695, 22078), (5173, 15770), (5810, 14041), (7390, 11039), (7885, 10346)]