20383740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{281}}^1$

素因数の和:340

約数の個数: 144

約数和(自身を含む): 68979456

約数和(自身を除く): 48595716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 31, 36, 39, 45, 52, 60, 62, 65, 78, 90, 93, 117, 124, 130, 155, 156, 180, 186, 195, 234, 260, 279, 281, 310, 372, 390, 403, 465, 468, 558, 562, 585, 620, 780, 806, 843, 930, 1116, 1124, 1170, 1209, 1395, 1405, 1612, 1686, 1860, 2015, 2340, 2418, 2529, 2790, 2810, 3372, 3627, 3653, 4030, 4215, 4836, 5058, 5580, 5620, 6045, 7254, 7306, 8060, 8430, 8711, 10116, 10959, 12090, 12645, 14508, 14612, 16860, 17422, 18135, 18265, 21918, 24180, 25290, 26133, 32877, 34844, 36270, 36530, 43555, 43836, 50580, 52266, 54795, 65754, 72540, 73060, 78399, 87110, 104532, 109590, 113243, 130665, 131508, 156798, 164385, 174220, 219180, 226486, 261330, 313596, 328770, 339729, 391995, 452972, 522660, 566215, 657540, 679458, 783990, 1019187, 1132430, 1358916, 1567980, 1698645, 2038374, 2264860, 3397290, 4076748, 5095935, 6794580, 10191870, 20383740]

約数ペア:

[(1, 20383740), (2, 10191870), (3, 6794580), (4, 5095935), (5, 4076748), (6, 3397290), (9, 2264860), (10, 2038374), (12, 1698645), (13, 1567980), (15, 1358916), (18, 1132430), (20, 1019187), (26, 783990), (30, 679458), (31, 657540), (36, 566215), (39, 522660), (45, 452972), (52, 391995), (60, 339729), (62, 328770), (65, 313596), (78, 261330), (90, 226486), (93, 219180), (117, 174220), (124, 164385), (130, 156798), (155, 131508), (156, 130665), (180, 113243), (186, 109590), (195, 104532), (234, 87110), (260, 78399), (279, 73060), (281, 72540), (310, 65754), (372, 54795), (390, 52266), (403, 50580), (465, 43836), (468, 43555), (558, 36530), (562, 36270), (585, 34844), (620, 32877), (780, 26133), (806, 25290), (843, 24180), (930, 21918), (1116, 18265), (1124, 18135), (1170, 17422), (1209, 16860), (1395, 14612), (1405, 14508), (1612, 12645), (1686, 12090), (1860, 10959), (2015, 10116), (2340, 8711), (2418, 8430), (2529, 8060), (2790, 7306), (2810, 7254), (3372, 6045), (3627, 5620), (3653, 5580), (4030, 5058), (4215, 4836)]