21992804

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{47}}^2\times {\mathrm{131}}^1$

素因数の和:248

約数の個数: 36

約数和(自身を含む): 41709360

約数和(自身を除く): 19716556

約数列:

[1, 2, 4, 19, 38, 47, 76, 94, 131, 188, 262, 524, 893, 1786, 2209, 2489, 3572, 4418, 4978, 6157, 8836, 9956, 12314, 24628, 41971, 83942, 116983, 167884, 233966, 289379, 467932, 578758, 1157516, 5498201, 10996402, 21992804]

約数ペア:

[(1, 21992804), (2, 10996402), (4, 5498201), (19, 1157516), (38, 578758), (47, 467932), (76, 289379), (94, 233966), (131, 167884), (188, 116983), (262, 83942), (524, 41971), (893, 24628), (1786, 12314), (2209, 9956), (2489, 8836), (3572, 6157), (4418, 4978)]