21378272

素因数分解:

$2^5\times {\mathrm{181}}^1\times {\mathrm{3691}}^1$

素因数の和:3882

約数の個数: 24

約数和(自身を含む): 42332472

約数和(自身を除く): 20954200

約数列:

[1, 2, 4, 8, 16, 32, 181, 362, 724, 1448, 2896, 3691, 5792, 7382, 14764, 29528, 59056, 118112, 668071, 1336142, 2672284, 5344568, 10689136, 21378272]

約数ペア:

[(1, 21378272), (2, 10689136), (4, 5344568), (8, 2672284), (16, 1336142), (32, 668071), (181, 118112), (362, 59056), (724, 29528), (1448, 14764), (2896, 7382), (3691, 5792)]