21916629

素因数分解:

$3^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1901}}^1$

素因数の和:1978

約数の個数: 32

約数和(自身を含む): 37735680

約数和(自身を除く): 15819051

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 183, 189, 427, 549, 1281, 1647, 1901, 3843, 5703, 11529, 13307, 17109, 39921, 51327, 115961, 119763, 347883, 359289, 811727, 1043649, 2435181, 3130947, 7305543, 21916629]

約数ペア:

[(1, 21916629), (3, 7305543), (7, 3130947), (9, 2435181), (21, 1043649), (27, 811727), (61, 359289), (63, 347883), (183, 119763), (189, 115961), (427, 51327), (549, 39921), (1281, 17109), (1647, 13307), (1901, 11529), (3843, 5703)]