20165309240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{2707}}^1$

素因数の和:2893

約数の個数: 128

約数和(自身を含む): 47870507520

約数和(自身を除く): 27705198280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 61, 71, 86, 122, 142, 172, 215, 244, 284, 305, 344, 355, 430, 488, 568, 610, 710, 860, 1220, 1420, 1720, 2440, 2623, 2707, 2840, 3053, 4331, 5246, 5414, 6106, 8662, 10492, 10828, 12212, 13115, 13535, 15265, 17324, 20984, 21655, 21656, 24424, 26230, 27070, 30530, 34648, 43310, 52460, 54140, 61060, 86620, 104920, 108280, 116401, 122120, 165127, 173240, 186233, 192197, 232802, 330254, 372466, 384394, 465604, 582005, 660508, 744932, 768788, 825635, 931165, 931208, 960985, 1164010, 1321016, 1489864, 1537576, 1651270, 1862330, 1921970, 2328020, 3302540, 3724660, 3843940, 4656040, 6605080, 7100461, 7449320, 7687880, 8264471, 11724017, 14200922, 16528942, 23448034, 28401844, 33057884, 35502305, 41322355, 46896068, 56803688, 58620085, 66115768, 71004610, 82644710, 93792136, 117240170, 142009220, 165289420, 234480340, 284018440, 330578840, 468960680, 504132731, 1008265462, 2016530924, 2520663655, 4033061848, 5041327310, 10082654620, 20165309240]

約数ペア:

[(1, 20165309240), (2, 10082654620), (4, 5041327310), (5, 4033061848), (8, 2520663655), (10, 2016530924), (20, 1008265462), (40, 504132731), (43, 468960680), (61, 330578840), (71, 284018440), (86, 234480340), (122, 165289420), (142, 142009220), (172, 117240170), (215, 93792136), (244, 82644710), (284, 71004610), (305, 66115768), (344, 58620085), (355, 56803688), (430, 46896068), (488, 41322355), (568, 35502305), (610, 33057884), (710, 28401844), (860, 23448034), (1220, 16528942), (1420, 14200922), (1720, 11724017), (2440, 8264471), (2623, 7687880), (2707, 7449320), (2840, 7100461), (3053, 6605080), (4331, 4656040), (5246, 3843940), (5414, 3724660), (6106, 3302540), (8662, 2328020), (10492, 1921970), (10828, 1862330), (12212, 1651270), (13115, 1537576), (13535, 1489864), (15265, 1321016), (17324, 1164010), (20984, 960985), (21655, 931208), (21656, 931165), (24424, 825635), (26230, 768788), (27070, 744932), (30530, 660508), (34648, 582005), (43310, 465604), (52460, 384394), (54140, 372466), (61060, 330254), (86620, 232802), (104920, 192197), (108280, 186233), (116401, 173240), (122120, 165127)]