21409878

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{6983}}^1$

素因数の和:7068

約数の個数: 32

約数和(自身を含む): 49614336

約数和(自身を除く): 28204458

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 73, 146, 219, 438, 511, 1022, 1533, 3066, 6983, 13966, 20949, 41898, 48881, 97762, 146643, 293286, 509759, 1019518, 1529277, 3058554, 3568313, 7136626, 10704939, 21409878]

約数ペア:

[(1, 21409878), (2, 10704939), (3, 7136626), (6, 3568313), (7, 3058554), (14, 1529277), (21, 1019518), (42, 509759), (73, 293286), (146, 146643), (219, 97762), (438, 48881), (511, 41898), (1022, 20949), (1533, 13966), (3066, 6983)]