20347813540

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{155161}}^1$

素因数の和:155332

約数の個数: 48

約数和(自身を含む): 43792922880

約数和(自身を除く): 23445109340

約数列:

[1, 2, 4, 5, 10, 20, 79, 83, 158, 166, 316, 332, 395, 415, 790, 830, 1580, 1660, 6557, 13114, 26228, 32785, 65570, 131140, 155161, 310322, 620644, 775805, 1551610, 3103220, 12257719, 12878363, 24515438, 25756726, 49030876, 51513452, 61288595, 64391815, 122577190, 128783630, 245154380, 257567260, 1017390677, 2034781354, 4069562708, 5086953385, 10173906770, 20347813540]

約数ペア:

[(1, 20347813540), (2, 10173906770), (4, 5086953385), (5, 4069562708), (10, 2034781354), (20, 1017390677), (79, 257567260), (83, 245154380), (158, 128783630), (166, 122577190), (316, 64391815), (332, 61288595), (395, 51513452), (415, 49030876), (790, 25756726), (830, 24515438), (1580, 12878363), (1660, 12257719), (6557, 3103220), (13114, 1551610), (26228, 775805), (32785, 620644), (65570, 310322), (131140, 155161)]