21080670

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{283}}^1$

素因数の和:497

約数の個数: 64

約数和(自身を含む): 54964224

約数和(自身を除く): 33883554

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 191, 195, 283, 382, 390, 566, 573, 849, 955, 1146, 1415, 1698, 1910, 2483, 2830, 2865, 3679, 4245, 4966, 5730, 7358, 7449, 8490, 11037, 12415, 14898, 18395, 22074, 24830, 36790, 37245, 54053, 55185, 74490, 108106, 110370, 162159, 270265, 324318, 540530, 702689, 810795, 1405378, 1621590, 2108067, 3513445, 4216134, 7026890, 10540335, 21080670]

約数ペア:

[(1, 21080670), (2, 10540335), (3, 7026890), (5, 4216134), (6, 3513445), (10, 2108067), (13, 1621590), (15, 1405378), (26, 810795), (30, 702689), (39, 540530), (65, 324318), (78, 270265), (130, 162159), (191, 110370), (195, 108106), (283, 74490), (382, 55185), (390, 54053), (566, 37245), (573, 36790), (849, 24830), (955, 22074), (1146, 18395), (1415, 14898), (1698, 12415), (1910, 11037), (2483, 8490), (2830, 7449), (2865, 7358), (3679, 5730), (4245, 4966)]