20978262

素因数分解:

$2^1\times 3^2\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:373

約数の個数: 48

約数和(自身を含む): 47017152

約数和(自身を除く): 26038890

約数列:

[1, 2, 3, 6, 9, 18, 47, 94, 137, 141, 181, 274, 282, 362, 411, 423, 543, 822, 846, 1086, 1233, 1629, 2466, 3258, 6439, 8507, 12878, 17014, 19317, 24797, 25521, 38634, 49594, 51042, 57951, 74391, 76563, 115902, 148782, 153126, 223173, 446346, 1165459, 2330918, 3496377, 6992754, 10489131, 20978262]

約数ペア:

[(1, 20978262), (2, 10489131), (3, 6992754), (6, 3496377), (9, 2330918), (18, 1165459), (47, 446346), (94, 223173), (137, 153126), (141, 148782), (181, 115902), (274, 76563), (282, 74391), (362, 57951), (411, 51042), (423, 49594), (543, 38634), (822, 25521), (846, 24797), (1086, 19317), (1233, 17014), (1629, 12878), (2466, 8507), (3258, 6439)]