641830720

素因数分解:

$2^6\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10079}}^1$

素因数の和:10295

約数の個数: 56

約数和(自身を含む): 1536192000

約数和(自身を除く): 894361280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 199, 320, 398, 796, 995, 1592, 1990, 3184, 3980, 6368, 7960, 10079, 12736, 15920, 20158, 31840, 40316, 50395, 63680, 80632, 100790, 161264, 201580, 322528, 403160, 645056, 806320, 1612640, 2005721, 3225280, 4011442, 8022884, 10028605, 16045768, 20057210, 32091536, 40114420, 64183072, 80228840, 128366144, 160457680, 320915360, 641830720]

約数ペア:

[(1, 641830720), (2, 320915360), (4, 160457680), (5, 128366144), (8, 80228840), (10, 64183072), (16, 40114420), (20, 32091536), (32, 20057210), (40, 16045768), (64, 10028605), (80, 8022884), (160, 4011442), (199, 3225280), (320, 2005721), (398, 1612640), (796, 806320), (995, 645056), (1592, 403160), (1990, 322528), (3184, 201580), (3980, 161264), (6368, 100790), (7960, 80632), (10079, 63680), (12736, 50395), (15920, 40316), (20158, 31840)]