199974140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{557}}^1\times {\mathrm{619}}^1$

素因数の和:1214

約数の個数: 48

約数和(自身を含む): 435909600

約数和(自身を除く): 235935460

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 557, 580, 619, 1114, 1238, 2228, 2476, 2785, 3095, 5570, 6190, 11140, 12380, 16153, 17951, 32306, 35902, 64612, 71804, 80765, 89755, 161530, 179510, 323060, 344783, 359020, 689566, 1379132, 1723915, 3447830, 6895660, 9998707, 19997414, 39994828, 49993535, 99987070, 199974140]

約数ペア:

[(1, 199974140), (2, 99987070), (4, 49993535), (5, 39994828), (10, 19997414), (20, 9998707), (29, 6895660), (58, 3447830), (116, 1723915), (145, 1379132), (290, 689566), (557, 359020), (580, 344783), (619, 323060), (1114, 179510), (1238, 161530), (2228, 89755), (2476, 80765), (2785, 71804), (3095, 64612), (5570, 35902), (6190, 32306), (11140, 17951), (12380, 16153)]