19913817

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 35392896

約数和(自身を除く): 15479079

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 121, 187, 231, 357, 363, 461, 561, 847, 1309, 1383, 2057, 2541, 3227, 3927, 5071, 6171, 7837, 9681, 14399, 15213, 23511, 35497, 43197, 54859, 55781, 86207, 106491, 164577, 167343, 258621, 390467, 603449, 948277, 1171401, 1810347, 2844831, 6637939, 19913817]

約数ペア:

[(1, 19913817), (3, 6637939), (7, 2844831), (11, 1810347), (17, 1171401), (21, 948277), (33, 603449), (51, 390467), (77, 258621), (119, 167343), (121, 164577), (187, 106491), (231, 86207), (357, 55781), (363, 54859), (461, 43197), (561, 35497), (847, 23511), (1309, 15213), (1383, 14399), (2057, 9681), (2541, 7837), (3227, 6171), (3927, 5071)]