21900900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10429}}^1$

素因数の和:10453

約数の個数: 72

約数和(自身を含む): 72425920

約数和(自身を除く): 50525020

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10429, 20858, 31287, 41716, 52145, 62574, 73003, 104290, 125148, 146006, 156435, 208580, 219009, 260725, 292012, 312870, 365015, 438018, 521450, 625740, 730030, 782175, 876036, 1042900, 1095045, 1460060, 1564350, 1825075, 2190090, 3128700, 3650150, 4380180, 5475225, 7300300, 10950450, 21900900]

約数ペア:

[(1, 21900900), (2, 10950450), (3, 7300300), (4, 5475225), (5, 4380180), (6, 3650150), (7, 3128700), (10, 2190090), (12, 1825075), (14, 1564350), (15, 1460060), (20, 1095045), (21, 1042900), (25, 876036), (28, 782175), (30, 730030), (35, 625740), (42, 521450), (50, 438018), (60, 365015), (70, 312870), (75, 292012), (84, 260725), (100, 219009), (105, 208580), (140, 156435), (150, 146006), (175, 125148), (210, 104290), (300, 73003), (350, 62574), (420, 52145), (525, 41716), (700, 31287), (1050, 20858), (2100, 10429)]