139635940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{877}}^1$

素因数の和:1324

約数の個数: 48

約数和(自身を含む): 309758400

約数和(自身を除く): 170122460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 419, 838, 877, 1676, 1754, 2095, 3508, 4190, 4385, 7961, 8380, 8770, 15922, 16663, 17540, 31844, 33326, 39805, 66652, 79610, 83315, 159220, 166630, 333260, 367463, 734926, 1469852, 1837315, 3674630, 6981797, 7349260, 13963594, 27927188, 34908985, 69817970, 139635940]

約数ペア:

[(1, 139635940), (2, 69817970), (4, 34908985), (5, 27927188), (10, 13963594), (19, 7349260), (20, 6981797), (38, 3674630), (76, 1837315), (95, 1469852), (190, 734926), (380, 367463), (419, 333260), (838, 166630), (877, 159220), (1676, 83315), (1754, 79610), (2095, 66652), (3508, 39805), (4190, 33326), (4385, 31844), (7961, 17540), (8380, 16663), (8770, 15922)]