19965978

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1663}}^1$

素因数の和:1723

約数の個数: 48

約数和(自身を含む): 46725120

約数和(自身を除く): 26759142

約数列:

[1, 2, 3, 6, 9, 18, 23, 29, 46, 58, 69, 87, 138, 174, 207, 261, 414, 522, 667, 1334, 1663, 2001, 3326, 4002, 4989, 6003, 9978, 12006, 14967, 29934, 38249, 48227, 76498, 96454, 114747, 144681, 229494, 289362, 344241, 434043, 688482, 868086, 1109221, 2218442, 3327663, 6655326, 9982989, 19965978]

約数ペア:

[(1, 19965978), (2, 9982989), (3, 6655326), (6, 3327663), (9, 2218442), (18, 1109221), (23, 868086), (29, 688482), (46, 434043), (58, 344241), (69, 289362), (87, 229494), (138, 144681), (174, 114747), (207, 96454), (261, 76498), (414, 48227), (522, 38249), (667, 29934), (1334, 14967), (1663, 12006), (2001, 9978), (3326, 6003), (4002, 4989)]