21261916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6703}}^1$

素因数の和:6781

約数の個数: 24

約数和(自身を含む): 40733504

約数和(自身を除く): 19471588

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6703, 13406, 26812, 87139, 174278, 348556, 408883, 817766, 1635532, 5315479, 10630958, 21261916]

約数ペア:

[(1, 21261916), (2, 10630958), (4, 5315479), (13, 1635532), (26, 817766), (52, 408883), (61, 348556), (122, 174278), (244, 87139), (793, 26812), (1586, 13406), (3172, 6703)]