21182245

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{601}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 31207680

約数和(自身を除く): 10025435

約数列:

[1, 5, 7, 19, 35, 53, 95, 133, 265, 371, 601, 665, 1007, 1855, 3005, 4207, 5035, 7049, 11419, 21035, 31853, 35245, 57095, 79933, 159265, 222971, 399665, 605207, 1114855, 3026035, 4236449, 21182245]

約数ペア:

[(1, 21182245), (5, 4236449), (7, 3026035), (19, 1114855), (35, 605207), (53, 399665), (95, 222971), (133, 159265), (265, 79933), (371, 57095), (601, 35245), (665, 31853), (1007, 21035), (1855, 11419), (3005, 7049), (4207, 5035)]