21302960

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:478

約数の個数: 80

約数和(自身を含む): 57288000

約数和(自身を除く): 35985040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 349, 436, 545, 560, 698, 763, 872, 1090, 1396, 1526, 1744, 1745, 2180, 2443, 2792, 3052, 3490, 3815, 4360, 4886, 5584, 6104, 6980, 7630, 8720, 9772, 12208, 12215, 13960, 15260, 19544, 24430, 27920, 30520, 38041, 39088, 48860, 61040, 76082, 97720, 152164, 190205, 195440, 266287, 304328, 380410, 532574, 608656, 760820, 1065148, 1331435, 1521640, 2130296, 2662870, 3043280, 4260592, 5325740, 10651480, 21302960]

約数ペア:

[(1, 21302960), (2, 10651480), (4, 5325740), (5, 4260592), (7, 3043280), (8, 2662870), (10, 2130296), (14, 1521640), (16, 1331435), (20, 1065148), (28, 760820), (35, 608656), (40, 532574), (56, 380410), (70, 304328), (80, 266287), (109, 195440), (112, 190205), (140, 152164), (218, 97720), (280, 76082), (349, 61040), (436, 48860), (545, 39088), (560, 38041), (698, 30520), (763, 27920), (872, 24430), (1090, 19544), (1396, 15260), (1526, 13960), (1744, 12215), (1745, 12208), (2180, 9772), (2443, 8720), (2792, 7630), (3052, 6980), (3490, 6104), (3815, 5584), (4360, 4886)]