31287780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1721}}^1$

素因数の和:1837

約数の個数: 72

約数和(自身を含む): 95901624

約数和(自身を除く): 64613844

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 101, 180, 202, 303, 404, 505, 606, 909, 1010, 1212, 1515, 1721, 1818, 2020, 3030, 3442, 3636, 4545, 5163, 6060, 6884, 8605, 9090, 10326, 15489, 17210, 18180, 20652, 25815, 30978, 34420, 51630, 61956, 77445, 103260, 154890, 173821, 309780, 347642, 521463, 695284, 869105, 1042926, 1564389, 1738210, 2085852, 2607315, 3128778, 3476420, 5214630, 6257556, 7821945, 10429260, 15643890, 31287780]

約数ペア:

[(1, 31287780), (2, 15643890), (3, 10429260), (4, 7821945), (5, 6257556), (6, 5214630), (9, 3476420), (10, 3128778), (12, 2607315), (15, 2085852), (18, 1738210), (20, 1564389), (30, 1042926), (36, 869105), (45, 695284), (60, 521463), (90, 347642), (101, 309780), (180, 173821), (202, 154890), (303, 103260), (404, 77445), (505, 61956), (606, 51630), (909, 34420), (1010, 30978), (1212, 25815), (1515, 20652), (1721, 18180), (1818, 17210), (2020, 15489), (3030, 10326), (3442, 9090), (3636, 8605), (4545, 6884), (5163, 6060)]