20780492540

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1\times {\mathrm{55147}}^1$

素因数の和:55466

約数の個数: 48

約数和(自身を含む): 44360168832

約数和(自身を除く): 23579676292

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 227, 332, 415, 454, 830, 908, 1135, 1660, 2270, 4540, 18841, 37682, 55147, 75364, 94205, 110294, 188410, 220588, 275735, 376820, 551470, 1102940, 4577201, 9154402, 12518369, 18308804, 22886005, 25036738, 45772010, 50073476, 62591845, 91544020, 125183690, 250367380, 1039024627, 2078049254, 4156098508, 5195123135, 10390246270, 20780492540]

約数ペア:

[(1, 20780492540), (2, 10390246270), (4, 5195123135), (5, 4156098508), (10, 2078049254), (20, 1039024627), (83, 250367380), (166, 125183690), (227, 91544020), (332, 62591845), (415, 50073476), (454, 45772010), (830, 25036738), (908, 22886005), (1135, 18308804), (1660, 12518369), (2270, 9154402), (4540, 4577201), (18841, 1102940), (37682, 551470), (55147, 376820), (75364, 275735), (94205, 220588), (110294, 188410)]