21451818

素因数分解:

$2^1\times 3^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1\times {\mathrm{271}}^1$

素因数の和:522

約数の個数: 32

約数和(自身を含む): 43868160

約数和(自身を除く): 22416342

約数列:

[1, 2, 3, 6, 79, 158, 167, 237, 271, 334, 474, 501, 542, 813, 1002, 1626, 13193, 21409, 26386, 39579, 42818, 45257, 64227, 79158, 90514, 128454, 135771, 271542, 3575303, 7150606, 10725909, 21451818]

約数ペア:

[(1, 21451818), (2, 10725909), (3, 7150606), (6, 3575303), (79, 271542), (158, 135771), (167, 128454), (237, 90514), (271, 79158), (334, 64227), (474, 45257), (501, 42818), (542, 39579), (813, 26386), (1002, 21409), (1626, 13193)]