21356588

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 42393120

約数和(自身を除く): 21036532

約数列:

[1, 2, 4, 11, 22, 44, 61, 73, 109, 122, 146, 218, 244, 292, 436, 671, 803, 1199, 1342, 1606, 2398, 2684, 3212, 4453, 4796, 6649, 7957, 8906, 13298, 15914, 17812, 26596, 31828, 48983, 73139, 87527, 97966, 146278, 175054, 195932, 292556, 350108, 485377, 970754, 1941508, 5339147, 10678294, 21356588]

約数ペア:

[(1, 21356588), (2, 10678294), (4, 5339147), (11, 1941508), (22, 970754), (44, 485377), (61, 350108), (73, 292556), (109, 195932), (122, 175054), (146, 146278), (218, 97966), (244, 87527), (292, 73139), (436, 48983), (671, 31828), (803, 26596), (1199, 17812), (1342, 15914), (1606, 13298), (2398, 8906), (2684, 7957), (3212, 6649), (4453, 4796)]