21258988

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{577}}^1$

素因数の和:793

約数の個数: 24

約数和(自身を含む): 38129504

約数和(自身を除く): 16870516

約数列:

[1, 2, 4, 61, 122, 151, 244, 302, 577, 604, 1154, 2308, 9211, 18422, 35197, 36844, 70394, 87127, 140788, 174254, 348508, 5314747, 10629494, 21258988]

約数ペア:

[(1, 21258988), (2, 10629494), (4, 5314747), (61, 348508), (122, 174254), (151, 140788), (244, 87127), (302, 70394), (577, 36844), (604, 35197), (1154, 18422), (2308, 9211)]