28089020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{151}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 60673536

約数和(自身を除く): 32584516

約数列:

[1, 2, 4, 5, 10, 20, 71, 131, 142, 151, 262, 284, 302, 355, 524, 604, 655, 710, 755, 1310, 1420, 1510, 2620, 3020, 9301, 10721, 18602, 19781, 21442, 37204, 39562, 42884, 46505, 53605, 79124, 93010, 98905, 107210, 186020, 197810, 214420, 395620, 1404451, 2808902, 5617804, 7022255, 14044510, 28089020]

約数ペア:

[(1, 28089020), (2, 14044510), (4, 7022255), (5, 5617804), (10, 2808902), (20, 1404451), (71, 395620), (131, 214420), (142, 197810), (151, 186020), (262, 107210), (284, 98905), (302, 93010), (355, 79124), (524, 53605), (604, 46505), (655, 42884), (710, 39562), (755, 37204), (1310, 21442), (1420, 19781), (1510, 18602), (2620, 10721), (3020, 9301)]