30605020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 65973600

約数和(自身を除く): 35368580

約数列:

[1, 2, 4, 5, 10, 20, 101, 109, 139, 202, 218, 278, 404, 436, 505, 545, 556, 695, 1010, 1090, 1390, 2020, 2180, 2780, 11009, 14039, 15151, 22018, 28078, 30302, 44036, 55045, 56156, 60604, 70195, 75755, 110090, 140390, 151510, 220180, 280780, 303020, 1530251, 3060502, 6121004, 7651255, 15302510, 30605020]

約数ペア:

[(1, 30605020), (2, 15302510), (4, 7651255), (5, 6121004), (10, 3060502), (20, 1530251), (101, 303020), (109, 280780), (139, 220180), (202, 151510), (218, 140390), (278, 110090), (404, 75755), (436, 70195), (505, 60604), (545, 56156), (556, 55045), (695, 44036), (1010, 30302), (1090, 28078), (1390, 22018), (2020, 15151), (2180, 14039), (2780, 11009)]