21270228

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{809}}^1$

素因数の和:1136

約数の個数: 48

約数和(自身を含む): 56972160

約数和(自身を除く): 35701932

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 313, 626, 809, 939, 1252, 1618, 1878, 2191, 2427, 3236, 3756, 4382, 4854, 5663, 6573, 8764, 9708, 11326, 13146, 16989, 22652, 26292, 33978, 67956, 253217, 506434, 759651, 1012868, 1519302, 1772519, 3038604, 3545038, 5317557, 7090076, 10635114, 21270228]

約数ペア:

[(1, 21270228), (2, 10635114), (3, 7090076), (4, 5317557), (6, 3545038), (7, 3038604), (12, 1772519), (14, 1519302), (21, 1012868), (28, 759651), (42, 506434), (84, 253217), (313, 67956), (626, 33978), (809, 26292), (939, 22652), (1252, 16989), (1618, 13146), (1878, 11326), (2191, 9708), (2427, 8764), (3236, 6573), (3756, 5663), (4382, 4854)]