28913120

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1151}}^1$

素因数の和:1323

約数の個数: 48

約数和(自身を含む): 68802048

約数和(自身を除く): 39888928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 785, 1151, 1256, 1570, 2302, 2512, 3140, 4604, 5024, 5755, 6280, 9208, 11510, 12560, 18416, 23020, 25120, 36832, 46040, 92080, 180707, 184160, 361414, 722828, 903535, 1445656, 1807070, 2891312, 3614140, 5782624, 7228280, 14456560, 28913120]

約数ペア:

[(1, 28913120), (2, 14456560), (4, 7228280), (5, 5782624), (8, 3614140), (10, 2891312), (16, 1807070), (20, 1445656), (32, 903535), (40, 722828), (80, 361414), (157, 184160), (160, 180707), (314, 92080), (628, 46040), (785, 36832), (1151, 25120), (1256, 23020), (1570, 18416), (2302, 12560), (2512, 11510), (3140, 9208), (4604, 6280), (5024, 5755)]