19984020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{47581}}^1$

素因数の和:47600

約数の個数: 48

約数和(自身を含む): 63950208

約数和(自身を除く): 43966188

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, 47581, 95162, 142743, 190324, 237905, 285486, 333067, 475810, 570972, 666134, 713715, 951620, 999201, 1332268, 1427430, 1665335, 1998402, 2854860, 3330670, 3996804, 4996005, 6661340, 9992010, 19984020]

約数ペア:

[(1, 19984020), (2, 9992010), (3, 6661340), (4, 4996005), (5, 3996804), (6, 3330670), (7, 2854860), (10, 1998402), (12, 1665335), (14, 1427430), (15, 1332268), (20, 999201), (21, 951620), (28, 713715), (30, 666134), (35, 570972), (42, 475810), (60, 333067), (70, 285486), (84, 237905), (105, 190324), (140, 142743), (210, 95162), (420, 47581)]