78842000

素因数分解:

$2^4\times 5^3\times {\mathrm{79}}^1\times {\mathrm{499}}^1$

素因数の和:601

約数の個数: 80

約数和(自身を含む): 193440000

約数和(自身を除く): 114598000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 125, 158, 200, 250, 316, 395, 400, 499, 500, 632, 790, 998, 1000, 1264, 1580, 1975, 1996, 2000, 2495, 3160, 3950, 3992, 4990, 6320, 7900, 7984, 9875, 9980, 12475, 15800, 19750, 19960, 24950, 31600, 39421, 39500, 39920, 49900, 62375, 78842, 79000, 99800, 124750, 157684, 158000, 197105, 199600, 249500, 315368, 394210, 499000, 630736, 788420, 985525, 998000, 1576840, 1971050, 3153680, 3942100, 4927625, 7884200, 9855250, 15768400, 19710500, 39421000, 78842000]

約数ペア:

[(1, 78842000), (2, 39421000), (4, 19710500), (5, 15768400), (8, 9855250), (10, 7884200), (16, 4927625), (20, 3942100), (25, 3153680), (40, 1971050), (50, 1576840), (79, 998000), (80, 985525), (100, 788420), (125, 630736), (158, 499000), (200, 394210), (250, 315368), (316, 249500), (395, 199600), (400, 197105), (499, 158000), (500, 157684), (632, 124750), (790, 99800), (998, 79000), (1000, 78842), (1264, 62375), (1580, 49900), (1975, 39920), (1996, 39500), (2000, 39421), (2495, 31600), (3160, 24950), (3950, 19960), (3992, 19750), (4990, 15800), (6320, 12475), (7900, 9980), (7984, 9875)]