18936040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15271}}^1$

素因数の和:15313

約数の個数: 32

約数和(自身を含む): 43983360

約数和(自身を除く): 25047320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 15271, 30542, 61084, 76355, 122168, 152710, 305420, 473401, 610840, 946802, 1893604, 2367005, 3787208, 4734010, 9468020, 18936040]

約数ペア:

[(1, 18936040), (2, 9468020), (4, 4734010), (5, 3787208), (8, 2367005), (10, 1893604), (20, 946802), (31, 610840), (40, 473401), (62, 305420), (124, 152710), (155, 122168), (248, 76355), (310, 61084), (620, 30542), (1240, 15271)]