19772220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{25349}}^1$

素因数の和:25374

約数の個数: 48

約数和(自身を含む): 59623200

約数和(自身を除く): 39850980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 25349, 50698, 76047, 101396, 126745, 152094, 253490, 304188, 329537, 380235, 506980, 659074, 760470, 988611, 1318148, 1520940, 1647685, 1977222, 3295370, 3954444, 4943055, 6590740, 9886110, 19772220]

約数ペア:

[(1, 19772220), (2, 9886110), (3, 6590740), (4, 4943055), (5, 3954444), (6, 3295370), (10, 1977222), (12, 1647685), (13, 1520940), (15, 1318148), (20, 988611), (26, 760470), (30, 659074), (39, 506980), (52, 380235), (60, 329537), (65, 304188), (78, 253490), (130, 152094), (156, 126745), (195, 101396), (260, 76047), (390, 50698), (780, 25349)]