21025240

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^2\times {\mathrm{151}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 48440880

約数和(自身を除く): 27415640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 151, 236, 295, 302, 472, 590, 604, 755, 1180, 1208, 1510, 2360, 3020, 3481, 6040, 6962, 8909, 13924, 17405, 17818, 27848, 34810, 35636, 44545, 69620, 71272, 89090, 139240, 178180, 356360, 525631, 1051262, 2102524, 2628155, 4205048, 5256310, 10512620, 21025240]

約数ペア:

[(1, 21025240), (2, 10512620), (4, 5256310), (5, 4205048), (8, 2628155), (10, 2102524), (20, 1051262), (40, 525631), (59, 356360), (118, 178180), (151, 139240), (236, 89090), (295, 71272), (302, 69620), (472, 44545), (590, 35636), (604, 34810), (755, 27848), (1180, 17818), (1208, 17405), (1510, 13924), (2360, 8909), (3020, 6962), (3481, 6040)]