20001660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47623}}^1$

素因数の和:47642

約数の個数: 48

約数和(自身を含む): 64006656

約数和(自身を除く): 44004996

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, 47623, 95246, 142869, 190492, 238115, 285738, 333361, 476230, 571476, 666722, 714345, 952460, 1000083, 1333444, 1428690, 1666805, 2000166, 2857380, 3333610, 4000332, 5000415, 6667220, 10000830, 20001660]

約数ペア:

[(1, 20001660), (2, 10000830), (3, 6667220), (4, 5000415), (5, 4000332), (6, 3333610), (7, 2857380), (10, 2000166), (12, 1666805), (14, 1428690), (15, 1333444), (20, 1000083), (21, 952460), (28, 714345), (30, 666722), (35, 571476), (42, 476230), (60, 333361), (70, 285738), (84, 238115), (105, 190492), (140, 142869), (210, 95246), (420, 47623)]