21087144

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^2\times {\mathrm{1733}}^1$

素因数の和:1771

約数の個数: 72

約数和(自身を含む): 61877790

約数和(自身を除く): 40790646

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 169, 234, 312, 338, 468, 507, 676, 936, 1014, 1352, 1521, 1733, 2028, 3042, 3466, 4056, 5199, 6084, 6932, 10398, 12168, 13864, 15597, 20796, 22529, 31194, 41592, 45058, 62388, 67587, 90116, 124776, 135174, 180232, 202761, 270348, 292877, 405522, 540696, 585754, 811044, 878631, 1171508, 1622088, 1757262, 2343016, 2635893, 3514524, 5271786, 7029048, 10543572, 21087144]

約数ペア:

[(1, 21087144), (2, 10543572), (3, 7029048), (4, 5271786), (6, 3514524), (8, 2635893), (9, 2343016), (12, 1757262), (13, 1622088), (18, 1171508), (24, 878631), (26, 811044), (36, 585754), (39, 540696), (52, 405522), (72, 292877), (78, 270348), (104, 202761), (117, 180232), (156, 135174), (169, 124776), (234, 90116), (312, 67587), (338, 62388), (468, 45058), (507, 41592), (676, 31194), (936, 22529), (1014, 20796), (1352, 15597), (1521, 13864), (1733, 12168), (2028, 10398), (3042, 6932), (3466, 6084), (4056, 5199)]