20917440

素因数分解:

$2^6\times 3^5\times 5^1\times {\mathrm{269}}^1$

素因数の和:301

約数の個数: 168

約数和(自身を含む): 74889360

約数和(自身を除く): 53971920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 192, 216, 240, 243, 269, 270, 288, 320, 324, 360, 405, 432, 480, 486, 538, 540, 576, 648, 720, 807, 810, 864, 960, 972, 1076, 1080, 1215, 1296, 1345, 1440, 1614, 1620, 1728, 1944, 2152, 2160, 2421, 2430, 2592, 2690, 2880, 3228, 3240, 3888, 4035, 4304, 4320, 4842, 4860, 5184, 5380, 6456, 6480, 7263, 7776, 8070, 8608, 8640, 9684, 9720, 10760, 12105, 12912, 12960, 14526, 15552, 16140, 17216, 19368, 19440, 21520, 21789, 24210, 25824, 25920, 29052, 32280, 36315, 38736, 38880, 43040, 43578, 48420, 51648, 58104, 64560, 65367, 72630, 77472, 77760, 86080, 87156, 96840, 108945, 116208, 129120, 130734, 145260, 154944, 174312, 193680, 217890, 232416, 258240, 261468, 290520, 326835, 348624, 387360, 435780, 464832, 522936, 581040, 653670, 697248, 774720, 871560, 1045872, 1162080, 1307340, 1394496, 1743120, 2091744, 2324160, 2614680, 3486240, 4183488, 5229360, 6972480, 10458720, 20917440]

約数ペア:

[(1, 20917440), (2, 10458720), (3, 6972480), (4, 5229360), (5, 4183488), (6, 3486240), (8, 2614680), (9, 2324160), (10, 2091744), (12, 1743120), (15, 1394496), (16, 1307340), (18, 1162080), (20, 1045872), (24, 871560), (27, 774720), (30, 697248), (32, 653670), (36, 581040), (40, 522936), (45, 464832), (48, 435780), (54, 387360), (60, 348624), (64, 326835), (72, 290520), (80, 261468), (81, 258240), (90, 232416), (96, 217890), (108, 193680), (120, 174312), (135, 154944), (144, 145260), (160, 130734), (162, 129120), (180, 116208), (192, 108945), (216, 96840), (240, 87156), (243, 86080), (269, 77760), (270, 77472), (288, 72630), (320, 65367), (324, 64560), (360, 58104), (405, 51648), (432, 48420), (480, 43578), (486, 43040), (538, 38880), (540, 38736), (576, 36315), (648, 32280), (720, 29052), (807, 25920), (810, 25824), (864, 24210), (960, 21789), (972, 21520), (1076, 19440), (1080, 19368), (1215, 17216), (1296, 16140), (1345, 15552), (1440, 14526), (1614, 12960), (1620, 12912), (1728, 12105), (1944, 10760), (2152, 9720), (2160, 9684), (2421, 8640), (2430, 8608), (2592, 8070), (2690, 7776), (2880, 7263), (3228, 6480), (3240, 6456), (3888, 5380), (4035, 5184), (4304, 4860), (4320, 4842)]