19107920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{967}}^1$

素因数の和:1012

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 31305520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 967, 988, 1040, 1235, 1520, 1934, 1976, 2470, 3868, 3952, 4835, 4940, 7736, 9670, 9880, 12571, 15472, 18373, 19340, 19760, 25142, 36746, 38680, 50284, 62855, 73492, 77360, 91865, 100568, 125710, 146984, 183730, 201136, 238849, 251420, 293968, 367460, 477698, 502840, 734920, 955396, 1005680, 1194245, 1469840, 1910792, 2388490, 3821584, 4776980, 9553960, 19107920]

約数ペア:

[(1, 19107920), (2, 9553960), (4, 4776980), (5, 3821584), (8, 2388490), (10, 1910792), (13, 1469840), (16, 1194245), (19, 1005680), (20, 955396), (26, 734920), (38, 502840), (40, 477698), (52, 367460), (65, 293968), (76, 251420), (80, 238849), (95, 201136), (104, 183730), (130, 146984), (152, 125710), (190, 100568), (208, 91865), (247, 77360), (260, 73492), (304, 62855), (380, 50284), (494, 38680), (520, 36746), (760, 25142), (967, 19760), (988, 19340), (1040, 18373), (1235, 15472), (1520, 12571), (1934, 9880), (1976, 9670), (2470, 7736), (3868, 4940), (3952, 4835)]