21428385

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2129}}^1$

素因数の和:2209

約数の個数: 32

約数和(自身を含む): 38033280

約数和(自身を除く): 16604895

約数列:

[1, 3, 5, 11, 15, 33, 55, 61, 165, 183, 305, 671, 915, 2013, 2129, 3355, 6387, 10065, 10645, 23419, 31935, 70257, 117095, 129869, 351285, 389607, 649345, 1428559, 1948035, 4285677, 7142795, 21428385]

約数ペア:

[(1, 21428385), (3, 7142795), (5, 4285677), (11, 1948035), (15, 1428559), (33, 649345), (55, 389607), (61, 351285), (165, 129869), (183, 117095), (305, 70257), (671, 31935), (915, 23419), (2013, 10645), (2129, 10065), (3355, 6387)]