21860684

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{853}}^1$

素因数の和:1049

約数の個数: 24

約数和(自身を含む): 39454800

約数和(自身を除く): 17594116

約数列:

[1, 2, 4, 43, 86, 149, 172, 298, 596, 853, 1706, 3412, 6407, 12814, 25628, 36679, 73358, 127097, 146716, 254194, 508388, 5465171, 10930342, 21860684]

約数ペア:

[(1, 21860684), (2, 10930342), (4, 5465171), (43, 508388), (86, 254194), (149, 146716), (172, 127097), (298, 73358), (596, 36679), (853, 25628), (1706, 12814), (3412, 6407)]