138753520

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{55949}}^1$

素因数の和:55993

約数の個数: 40

約数和(自身を含む): 333014400

約数和(自身を除く): 194260880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 55949, 111898, 223796, 279745, 447592, 559490, 895184, 1118980, 1734419, 2237960, 3468838, 4475920, 6937676, 8672095, 13875352, 17344190, 27750704, 34688380, 69376760, 138753520]

約数ペア:

[(1, 138753520), (2, 69376760), (4, 34688380), (5, 27750704), (8, 17344190), (10, 13875352), (16, 8672095), (20, 6937676), (31, 4475920), (40, 3468838), (62, 2237960), (80, 1734419), (124, 1118980), (155, 895184), (248, 559490), (310, 447592), (496, 279745), (620, 223796), (1240, 111898), (2480, 55949)]