39421000

素因数分解:

$2^3\times 5^3\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:599

約数の個数: 64

約数和(自身を含む): 93600000

約数和(自身を除く): 54179000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 79, 100, 125, 158, 200, 250, 316, 395, 499, 500, 632, 790, 998, 1000, 1580, 1975, 1996, 2495, 3160, 3950, 3992, 4990, 7900, 9875, 9980, 12475, 15800, 19750, 19960, 24950, 39421, 39500, 49900, 62375, 78842, 79000, 99800, 124750, 157684, 197105, 249500, 315368, 394210, 499000, 788420, 985525, 1576840, 1971050, 3942100, 4927625, 7884200, 9855250, 19710500, 39421000]

約数ペア:

[(1, 39421000), (2, 19710500), (4, 9855250), (5, 7884200), (8, 4927625), (10, 3942100), (20, 1971050), (25, 1576840), (40, 985525), (50, 788420), (79, 499000), (100, 394210), (125, 315368), (158, 249500), (200, 197105), (250, 157684), (316, 124750), (395, 99800), (499, 79000), (500, 78842), (632, 62375), (790, 49900), (998, 39500), (1000, 39421), (1580, 24950), (1975, 19960), (1996, 19750), (2495, 15800), (3160, 12475), (3950, 9980), (3992, 9875), (4990, 7900)]