21184160

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4271}}^1$

素因数の和:4317

約数の個数: 48

約数和(自身を含む): 51674112

約数和(自身を除く): 30489952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4271, 4960, 8542, 17084, 21355, 34168, 42710, 68336, 85420, 132401, 136672, 170840, 264802, 341680, 529604, 662005, 683360, 1059208, 1324010, 2118416, 2648020, 4236832, 5296040, 10592080, 21184160]

約数ペア:

[(1, 21184160), (2, 10592080), (4, 5296040), (5, 4236832), (8, 2648020), (10, 2118416), (16, 1324010), (20, 1059208), (31, 683360), (32, 662005), (40, 529604), (62, 341680), (80, 264802), (124, 170840), (155, 136672), (160, 132401), (248, 85420), (310, 68336), (496, 42710), (620, 34168), (992, 21355), (1240, 17084), (2480, 8542), (4271, 4960)]