19729640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2273}}^1$

素因数の和:2322

約数の個数: 64

約数和(自身を含む): 52392960

約数和(自身を除く): 32663320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 2273, 4340, 4546, 8680, 9092, 11365, 15911, 18184, 22730, 31822, 45460, 63644, 70463, 79555, 90920, 127288, 140926, 159110, 281852, 318220, 352315, 493241, 563704, 636440, 704630, 986482, 1409260, 1972964, 2466205, 2818520, 3945928, 4932410, 9864820, 19729640]

約数ペア:

[(1, 19729640), (2, 9864820), (4, 4932410), (5, 3945928), (7, 2818520), (8, 2466205), (10, 1972964), (14, 1409260), (20, 986482), (28, 704630), (31, 636440), (35, 563704), (40, 493241), (56, 352315), (62, 318220), (70, 281852), (124, 159110), (140, 140926), (155, 127288), (217, 90920), (248, 79555), (280, 70463), (310, 63644), (434, 45460), (620, 31822), (868, 22730), (1085, 18184), (1240, 15911), (1736, 11365), (2170, 9092), (2273, 8680), (4340, 4546)]