20739978

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{241}}^1\times {\mathrm{683}}^1$

素因数の和:939

約数の個数: 48

約数和(自身を含む): 51644736

約数和(自身を除く): 30904758

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 241, 482, 683, 723, 1366, 1446, 1687, 2049, 2169, 3374, 4098, 4338, 4781, 5061, 6147, 9562, 10122, 12294, 14343, 15183, 28686, 30366, 43029, 86058, 164603, 329206, 493809, 987618, 1152221, 1481427, 2304442, 2962854, 3456663, 6913326, 10369989, 20739978]

約数ペア:

[(1, 20739978), (2, 10369989), (3, 6913326), (6, 3456663), (7, 2962854), (9, 2304442), (14, 1481427), (18, 1152221), (21, 987618), (42, 493809), (63, 329206), (126, 164603), (241, 86058), (482, 43029), (683, 30366), (723, 28686), (1366, 15183), (1446, 14343), (1687, 12294), (2049, 10122), (2169, 9562), (3374, 6147), (4098, 5061), (4338, 4781)]