128605000

素因数分解:

$2^3\times 5^4\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:149

約数の個数: 120

約数和(自身を含む): 323685450

約数和(自身を除く): 195080450

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 89, 100, 125, 136, 170, 178, 200, 250, 289, 340, 356, 425, 445, 500, 578, 625, 680, 712, 850, 890, 1000, 1156, 1250, 1445, 1513, 1700, 1780, 2125, 2225, 2312, 2500, 2890, 3026, 3400, 3560, 4250, 4450, 5000, 5780, 6052, 7225, 7565, 8500, 8900, 10625, 11125, 11560, 12104, 14450, 15130, 17000, 17800, 21250, 22250, 25721, 28900, 30260, 36125, 37825, 42500, 44500, 51442, 55625, 57800, 60520, 72250, 75650, 85000, 89000, 102884, 111250, 128605, 144500, 151300, 180625, 189125, 205768, 222500, 257210, 289000, 302600, 361250, 378250, 445000, 514420, 643025, 722500, 756500, 945625, 1028840, 1286050, 1445000, 1513000, 1891250, 2572100, 3215125, 3782500, 5144200, 6430250, 7565000, 12860500, 16075625, 25721000, 32151250, 64302500, 128605000]

約数ペア:

[(1, 128605000), (2, 64302500), (4, 32151250), (5, 25721000), (8, 16075625), (10, 12860500), (17, 7565000), (20, 6430250), (25, 5144200), (34, 3782500), (40, 3215125), (50, 2572100), (68, 1891250), (85, 1513000), (89, 1445000), (100, 1286050), (125, 1028840), (136, 945625), (170, 756500), (178, 722500), (200, 643025), (250, 514420), (289, 445000), (340, 378250), (356, 361250), (425, 302600), (445, 289000), (500, 257210), (578, 222500), (625, 205768), (680, 189125), (712, 180625), (850, 151300), (890, 144500), (1000, 128605), (1156, 111250), (1250, 102884), (1445, 89000), (1513, 85000), (1700, 75650), (1780, 72250), (2125, 60520), (2225, 57800), (2312, 55625), (2500, 51442), (2890, 44500), (3026, 42500), (3400, 37825), (3560, 36125), (4250, 30260), (4450, 28900), (5000, 25721), (5780, 22250), (6052, 21250), (7225, 17800), (7565, 17000), (8500, 15130), (8900, 14450), (10625, 12104), (11125, 11560)]