21510268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{2477}}^1$

素因数の和:2661

約数の個数: 24

約数和(自身を含む): 40797792

約数和(自身を除く): 19287524

約数列:

[1, 2, 4, 13, 26, 52, 167, 334, 668, 2171, 2477, 4342, 4954, 8684, 9908, 32201, 64402, 128804, 413659, 827318, 1654636, 5377567, 10755134, 21510268]

約数ペア:

[(1, 21510268), (2, 10755134), (4, 5377567), (13, 1654636), (26, 827318), (52, 413659), (167, 128804), (334, 64402), (668, 32201), (2171, 9908), (2477, 8684), (4342, 4954)]