399999780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{116959}}^1$

素因数の和:116993

約数の個数: 72

約数和(自身を含む): 1277203200

約数和(自身を除く): 877203420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 114, 171, 180, 190, 228, 285, 342, 380, 570, 684, 855, 1140, 1710, 3420, 116959, 233918, 350877, 467836, 584795, 701754, 1052631, 1169590, 1403508, 1754385, 2105262, 2222221, 2339180, 3508770, 4210524, 4444442, 5263155, 6666663, 7017540, 8888884, 10526310, 11111105, 13333326, 19999989, 21052620, 22222210, 26666652, 33333315, 39999978, 44444420, 66666630, 79999956, 99999945, 133333260, 199999890, 399999780]

約数ペア:

[(1, 399999780), (2, 199999890), (3, 133333260), (4, 99999945), (5, 79999956), (6, 66666630), (9, 44444420), (10, 39999978), (12, 33333315), (15, 26666652), (18, 22222210), (19, 21052620), (20, 19999989), (30, 13333326), (36, 11111105), (38, 10526310), (45, 8888884), (57, 7017540), (60, 6666663), (76, 5263155), (90, 4444442), (95, 4210524), (114, 3508770), (171, 2339180), (180, 2222221), (190, 2105262), (228, 1754385), (285, 1403508), (342, 1169590), (380, 1052631), (570, 701754), (684, 584795), (855, 467836), (1140, 350877), (1710, 233918), (3420, 116959)]