20640568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{8629}}^1$

素因数の和:8671

約数の個数: 32

約数和(自身を含む): 43495200

約数和(自身を除く): 22854632

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 184, 299, 598, 1196, 2392, 8629, 17258, 34516, 69032, 112177, 198467, 224354, 396934, 448708, 793868, 897416, 1587736, 2580071, 5160142, 10320284, 20640568]

約数ペア:

[(1, 20640568), (2, 10320284), (4, 5160142), (8, 2580071), (13, 1587736), (23, 897416), (26, 793868), (46, 448708), (52, 396934), (92, 224354), (104, 198467), (184, 112177), (299, 69032), (598, 34516), (1196, 17258), (2392, 8629)]