20741640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1361}}^1$

素因数の和:1502

約数の個数: 64

約数和(自身を含む): 62760960

約数和(自身を除く): 42019320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 127, 254, 381, 508, 635, 762, 1016, 1270, 1361, 1524, 1905, 2540, 2722, 3048, 3810, 4083, 5080, 5444, 6805, 7620, 8166, 10888, 13610, 15240, 16332, 20415, 27220, 32664, 40830, 54440, 81660, 163320, 172847, 345694, 518541, 691388, 864235, 1037082, 1382776, 1728470, 2074164, 2592705, 3456940, 4148328, 5185410, 6913880, 10370820, 20741640]

約数ペア:

[(1, 20741640), (2, 10370820), (3, 6913880), (4, 5185410), (5, 4148328), (6, 3456940), (8, 2592705), (10, 2074164), (12, 1728470), (15, 1382776), (20, 1037082), (24, 864235), (30, 691388), (40, 518541), (60, 345694), (120, 172847), (127, 163320), (254, 81660), (381, 54440), (508, 40830), (635, 32664), (762, 27220), (1016, 20415), (1270, 16332), (1361, 15240), (1524, 13610), (1905, 10888), (2540, 8166), (2722, 7620), (3048, 6805), (3810, 5444), (4083, 5080)]