402020480

素因数分解:

$2^7\times 5^1\times {\mathrm{157}}^1\times {\mathrm{4001}}^1$

素因数の和:4177

約数の個数: 64

約数和(自身を含む): 967443480

約数和(自身を除く): 565423000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 314, 320, 628, 640, 785, 1256, 1570, 2512, 3140, 4001, 5024, 6280, 8002, 10048, 12560, 16004, 20005, 20096, 25120, 32008, 40010, 50240, 64016, 80020, 100480, 128032, 160040, 256064, 320080, 512128, 628157, 640160, 1256314, 1280320, 2512628, 2560640, 3140785, 5025256, 6281570, 10050512, 12563140, 20101024, 25126280, 40202048, 50252560, 80404096, 100505120, 201010240, 402020480]

約数ペア:

[(1, 402020480), (2, 201010240), (4, 100505120), (5, 80404096), (8, 50252560), (10, 40202048), (16, 25126280), (20, 20101024), (32, 12563140), (40, 10050512), (64, 6281570), (80, 5025256), (128, 3140785), (157, 2560640), (160, 2512628), (314, 1280320), (320, 1256314), (628, 640160), (640, 628157), (785, 512128), (1256, 320080), (1570, 256064), (2512, 160040), (3140, 128032), (4001, 100480), (5024, 80020), (6280, 64016), (8002, 50240), (10048, 40010), (12560, 32008), (16004, 25120), (20005, 20096)]