21074655

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{541}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 40038624

約数和(自身を除く): 18963969

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 53, 105, 147, 159, 245, 265, 371, 541, 735, 795, 1113, 1623, 1855, 2597, 2705, 3787, 5565, 7791, 8115, 11361, 12985, 18935, 26509, 28673, 38955, 56805, 79527, 86019, 132545, 143365, 200711, 397635, 430095, 602133, 1003555, 1404977, 3010665, 4214931, 7024885, 21074655]

約数ペア:

[(1, 21074655), (3, 7024885), (5, 4214931), (7, 3010665), (15, 1404977), (21, 1003555), (35, 602133), (49, 430095), (53, 397635), (105, 200711), (147, 143365), (159, 132545), (245, 86019), (265, 79527), (371, 56805), (541, 38955), (735, 28673), (795, 26509), (1113, 18935), (1623, 12985), (1855, 11361), (2597, 8115), (2705, 7791), (3787, 5565)]