21511460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{419}}^1$

素因数の和:596

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 26751580

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 151, 170, 302, 340, 419, 604, 755, 838, 1510, 1676, 2095, 2567, 3020, 4190, 5134, 7123, 8380, 10268, 12835, 14246, 25670, 28492, 35615, 51340, 63269, 71230, 126538, 142460, 253076, 316345, 632690, 1075573, 1265380, 2151146, 4302292, 5377865, 10755730, 21511460]

約数ペア:

[(1, 21511460), (2, 10755730), (4, 5377865), (5, 4302292), (10, 2151146), (17, 1265380), (20, 1075573), (34, 632690), (68, 316345), (85, 253076), (151, 142460), (170, 126538), (302, 71230), (340, 63269), (419, 51340), (604, 35615), (755, 28492), (838, 25670), (1510, 14246), (1676, 12835), (2095, 10268), (2567, 8380), (3020, 7123), (4190, 5134)]