21853566

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{691}}^1$

素因数の和:957

約数の個数: 48

約数和(自身を含む): 54407808

約数和(自身を除く): 32554242

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 251, 502, 691, 753, 1382, 1506, 1757, 2073, 2259, 3514, 4146, 4518, 4837, 5271, 6219, 9674, 10542, 12438, 14511, 15813, 29022, 31626, 43533, 87066, 173441, 346882, 520323, 1040646, 1214087, 1560969, 2428174, 3121938, 3642261, 7284522, 10926783, 21853566]

約数ペア:

[(1, 21853566), (2, 10926783), (3, 7284522), (6, 3642261), (7, 3121938), (9, 2428174), (14, 1560969), (18, 1214087), (21, 1040646), (42, 520323), (63, 346882), (126, 173441), (251, 87066), (502, 43533), (691, 31626), (753, 29022), (1382, 15813), (1506, 14511), (1757, 12438), (2073, 10542), (2259, 9674), (3514, 6219), (4146, 5271), (4518, 4837)]