18825280

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:767

約数の個数: 56

約数和(自身を含む): 45399960

約数和(自身を除く): 26574680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 661, 712, 890, 1322, 1424, 1780, 2644, 2848, 3305, 3560, 5288, 5696, 6610, 7120, 10576, 13220, 14240, 21152, 26440, 28480, 42304, 52880, 58829, 105760, 117658, 211520, 235316, 294145, 470632, 588290, 941264, 1176580, 1882528, 2353160, 3765056, 4706320, 9412640, 18825280]

約数ペア:

[(1, 18825280), (2, 9412640), (4, 4706320), (5, 3765056), (8, 2353160), (10, 1882528), (16, 1176580), (20, 941264), (32, 588290), (40, 470632), (64, 294145), (80, 235316), (89, 211520), (160, 117658), (178, 105760), (320, 58829), (356, 52880), (445, 42304), (661, 28480), (712, 26440), (890, 21152), (1322, 14240), (1424, 13220), (1780, 10576), (2644, 7120), (2848, 6610), (3305, 5696), (3560, 5288)]