20379400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:239

約数の個数: 96

約数和(自身を含む): 51782400

約数和(自身を除く): 31403000

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 31, 38, 40, 50, 62, 76, 95, 100, 124, 152, 155, 173, 190, 200, 248, 310, 346, 380, 475, 589, 620, 692, 760, 775, 865, 950, 1178, 1240, 1384, 1550, 1730, 1900, 2356, 2945, 3100, 3287, 3460, 3800, 4325, 4712, 5363, 5890, 6200, 6574, 6920, 8650, 10726, 11780, 13148, 14725, 16435, 17300, 21452, 23560, 26296, 26815, 29450, 32870, 34600, 42904, 53630, 58900, 65740, 82175, 101897, 107260, 117800, 131480, 134075, 164350, 203794, 214520, 268150, 328700, 407588, 509485, 536300, 657400, 815176, 1018970, 1072600, 2037940, 2547425, 4075880, 5094850, 10189700, 20379400]

約数ペア:

[(1, 20379400), (2, 10189700), (4, 5094850), (5, 4075880), (8, 2547425), (10, 2037940), (19, 1072600), (20, 1018970), (25, 815176), (31, 657400), (38, 536300), (40, 509485), (50, 407588), (62, 328700), (76, 268150), (95, 214520), (100, 203794), (124, 164350), (152, 134075), (155, 131480), (173, 117800), (190, 107260), (200, 101897), (248, 82175), (310, 65740), (346, 58900), (380, 53630), (475, 42904), (589, 34600), (620, 32870), (692, 29450), (760, 26815), (775, 26296), (865, 23560), (950, 21452), (1178, 17300), (1240, 16435), (1384, 14725), (1550, 13148), (1730, 11780), (1900, 10726), (2356, 8650), (2945, 6920), (3100, 6574), (3287, 6200), (3460, 5890), (3800, 5363), (4325, 4712)]