28423040

素因数分解:

$2^7\times 5^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:607

約数の個数: 64

約数和(自身を含む): 68850000

約数和(自身を除く): 40426960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 128, 160, 178, 320, 356, 445, 499, 640, 712, 890, 998, 1424, 1780, 1996, 2495, 2848, 3560, 3992, 4990, 5696, 7120, 7984, 9980, 11392, 14240, 15968, 19960, 28480, 31936, 39920, 44411, 56960, 63872, 79840, 88822, 159680, 177644, 222055, 319360, 355288, 444110, 710576, 888220, 1421152, 1776440, 2842304, 3552880, 5684608, 7105760, 14211520, 28423040]

約数ペア:

[(1, 28423040), (2, 14211520), (4, 7105760), (5, 5684608), (8, 3552880), (10, 2842304), (16, 1776440), (20, 1421152), (32, 888220), (40, 710576), (64, 444110), (80, 355288), (89, 319360), (128, 222055), (160, 177644), (178, 159680), (320, 88822), (356, 79840), (445, 63872), (499, 56960), (640, 44411), (712, 39920), (890, 31936), (998, 28480), (1424, 19960), (1780, 15968), (1996, 14240), (2495, 11392), (2848, 9980), (3560, 7984), (3992, 7120), (4990, 5696)]