20868640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:234

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 33321440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 79, 80, 104, 127, 130, 158, 160, 208, 254, 260, 316, 395, 416, 508, 520, 632, 635, 790, 1016, 1027, 1040, 1264, 1270, 1580, 1651, 2032, 2054, 2080, 2528, 2540, 3160, 3302, 4064, 4108, 5080, 5135, 6320, 6604, 8216, 8255, 10033, 10160, 10270, 12640, 13208, 16432, 16510, 20066, 20320, 20540, 26416, 32864, 33020, 40132, 41080, 50165, 52832, 66040, 80264, 82160, 100330, 130429, 132080, 160528, 164320, 200660, 260858, 264160, 321056, 401320, 521716, 652145, 802640, 1043432, 1304290, 1605280, 2086864, 2608580, 4173728, 5217160, 10434320, 20868640]

約数ペア:

[(1, 20868640), (2, 10434320), (4, 5217160), (5, 4173728), (8, 2608580), (10, 2086864), (13, 1605280), (16, 1304290), (20, 1043432), (26, 802640), (32, 652145), (40, 521716), (52, 401320), (65, 321056), (79, 264160), (80, 260858), (104, 200660), (127, 164320), (130, 160528), (158, 132080), (160, 130429), (208, 100330), (254, 82160), (260, 80264), (316, 66040), (395, 52832), (416, 50165), (508, 41080), (520, 40132), (632, 33020), (635, 32864), (790, 26416), (1016, 20540), (1027, 20320), (1040, 20066), (1264, 16510), (1270, 16432), (1580, 13208), (1651, 12640), (2032, 10270), (2054, 10160), (2080, 10033), (2528, 8255), (2540, 8216), (3160, 6604), (3302, 6320), (4064, 5135), (4108, 5080)]