19995780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47609}}^1$

素因数の和:47628

約数の個数: 48

約数和(自身を含む): 63987840

約数和(自身を除く): 43992060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 47609, 95218, 142827, 190436, 238045, 285654, 333263, 476090, 571308, 666526, 714135, 952180, 999789, 1333052, 1428270, 1666315, 1999578, 2856540, 3332630, 3999156, 4998945, 6665260, 9997890, 19995780]

約数ペア:

[(1, 19995780), (2, 9997890), (3, 6665260), (4, 4998945), (5, 3999156), (6, 3332630), (7, 2856540), (10, 1999578), (12, 1666315), (14, 1428270), (15, 1333052), (20, 999789), (21, 952180), (28, 714135), (30, 666526), (35, 571308), (42, 476090), (60, 333263), (70, 285654), (84, 238045), (105, 190436), (140, 142827), (210, 95218), (420, 47609)]