19896100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:725

約数の個数: 72

約数和(自身を含む): 50566208

約数和(自身を除く): 30670108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 43, 50, 70, 86, 100, 140, 172, 175, 215, 301, 350, 430, 602, 661, 700, 860, 1075, 1204, 1322, 1505, 2150, 2644, 3010, 3305, 4300, 4627, 6020, 6610, 7525, 9254, 13220, 15050, 16525, 18508, 23135, 28423, 30100, 33050, 46270, 56846, 66100, 92540, 113692, 115675, 142115, 198961, 231350, 284230, 397922, 462700, 568460, 710575, 795844, 994805, 1421150, 1989610, 2842300, 3979220, 4974025, 9948050, 19896100]

約数ペア:

[(1, 19896100), (2, 9948050), (4, 4974025), (5, 3979220), (7, 2842300), (10, 1989610), (14, 1421150), (20, 994805), (25, 795844), (28, 710575), (35, 568460), (43, 462700), (50, 397922), (70, 284230), (86, 231350), (100, 198961), (140, 142115), (172, 115675), (175, 113692), (215, 92540), (301, 66100), (350, 56846), (430, 46270), (602, 33050), (661, 30100), (700, 28423), (860, 23135), (1075, 18508), (1204, 16525), (1322, 15050), (1505, 13220), (2150, 9254), (2644, 7525), (3010, 6610), (3305, 6020), (4300, 4627)]