21871590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{56081}}^1$

素因数の和:56104

約数の個数: 32

約数和(自身を含む): 56530656

約数和(自身を除く): 34659066

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 56081, 112162, 168243, 280405, 336486, 560810, 729053, 841215, 1458106, 1682430, 2187159, 3645265, 4374318, 7290530, 10935795, 21871590]

約数ペア:

[(1, 21871590), (2, 10935795), (3, 7290530), (5, 4374318), (6, 3645265), (10, 2187159), (13, 1682430), (15, 1458106), (26, 841215), (30, 729053), (39, 560810), (65, 336486), (78, 280405), (130, 168243), (195, 112162), (390, 56081)]