21994980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{52369}}^1$

素因数の和:52388

約数の個数: 48

約数和(自身を含む): 70385280

約数和(自身を除く): 48390300

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, 52369, 104738, 157107, 209476, 261845, 314214, 366583, 523690, 628428, 733166, 785535, 1047380, 1099749, 1466332, 1571070, 1832915, 2199498, 3142140, 3665830, 4398996, 5498745, 7331660, 10997490, 21994980]

約数ペア:

[(1, 21994980), (2, 10997490), (3, 7331660), (4, 5498745), (5, 4398996), (6, 3665830), (7, 3142140), (10, 2199498), (12, 1832915), (14, 1571070), (15, 1466332), (20, 1099749), (21, 1047380), (28, 785535), (30, 733166), (35, 628428), (42, 523690), (60, 366583), (70, 314214), (84, 261845), (105, 209476), (140, 157107), (210, 104738), (420, 52369)]