156780160

素因数分解:

$2^7\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1231}}^1$

素因数の和:1449

約数の個数: 64

約数和(自身を含む): 376992000

約数和(自身を除く): 220211840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 320, 398, 640, 796, 995, 1231, 1592, 1990, 2462, 3184, 3980, 4924, 6155, 6368, 7960, 9848, 12310, 12736, 15920, 19696, 24620, 25472, 31840, 39392, 49240, 63680, 78784, 98480, 127360, 157568, 196960, 244969, 393920, 489938, 787840, 979876, 1224845, 1959752, 2449690, 3919504, 4899380, 7839008, 9798760, 15678016, 19597520, 31356032, 39195040, 78390080, 156780160]

約数ペア:

[(1, 156780160), (2, 78390080), (4, 39195040), (5, 31356032), (8, 19597520), (10, 15678016), (16, 9798760), (20, 7839008), (32, 4899380), (40, 3919504), (64, 2449690), (80, 1959752), (128, 1224845), (160, 979876), (199, 787840), (320, 489938), (398, 393920), (640, 244969), (796, 196960), (995, 157568), (1231, 127360), (1592, 98480), (1990, 78784), (2462, 63680), (3184, 49240), (3980, 39392), (4924, 31840), (6155, 25472), (6368, 24620), (7960, 19696), (9848, 15920), (12310, 12736)]