221387120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89269}}^1$

素因数の和:89313

約数の個数: 40

約数和(自身を含む): 531335040

約数和(自身を除く): 309947920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 89269, 178538, 357076, 446345, 714152, 892690, 1428304, 1785380, 2767339, 3570760, 5534678, 7141520, 11069356, 13836695, 22138712, 27673390, 44277424, 55346780, 110693560, 221387120]

約数ペア:

[(1, 221387120), (2, 110693560), (4, 55346780), (5, 44277424), (8, 27673390), (10, 22138712), (16, 13836695), (20, 11069356), (31, 7141520), (40, 5534678), (62, 3570760), (80, 2767339), (124, 1785380), (155, 1428304), (248, 892690), (310, 714152), (496, 446345), (620, 357076), (1240, 178538), (2480, 89269)]