71720040

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{85381}}^1$

素因数の和:85402

約数の個数: 64

約数和(自身を含む): 245900160

約数和(自身を除く): 174180120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 85381, 170762, 256143, 341524, 426905, 512286, 597667, 683048, 853810, 1024572, 1195334, 1280715, 1707620, 1793001, 2049144, 2390668, 2561430, 2988335, 3415240, 3586002, 4781336, 5122860, 5976670, 7172004, 8965005, 10245720, 11953340, 14344008, 17930010, 23906680, 35860020, 71720040]

約数ペア:

[(1, 71720040), (2, 35860020), (3, 23906680), (4, 17930010), (5, 14344008), (6, 11953340), (7, 10245720), (8, 8965005), (10, 7172004), (12, 5976670), (14, 5122860), (15, 4781336), (20, 3586002), (21, 3415240), (24, 2988335), (28, 2561430), (30, 2390668), (35, 2049144), (40, 1793001), (42, 1707620), (56, 1280715), (60, 1195334), (70, 1024572), (84, 853810), (105, 683048), (120, 597667), (140, 512286), (168, 426905), (210, 341524), (280, 256143), (420, 170762), (840, 85381)]