21056605440

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421807}}^1$

素因数の和:421844

約数の個数: 144

約数和(自身を含む): 72422746368

約数和(自身を除く): 51366140928

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 768, 780, 832, 960, 1040, 1248, 1280, 1560, 1664, 1920, 2080, 2496, 3120, 3328, 3840, 4160, 4992, 6240, 8320, 9984, 12480, 16640, 24960, 49920, 421807, 843614, 1265421, 1687228, 2109035, 2530842, 3374456, 4218070, 5061684, 5483491, 6327105, 6748912, 8436140, 10123368, 10966982, 12654210, 13497824, 16450473, 16872280, 20246736, 21933964, 25308420, 26995648, 27417455, 32900946, 33744560, 40493472, 43867928, 50616840, 53991296, 54834910, 65801892, 67489120, 80986944, 82252365, 87735856, 101233680, 107982592, 109669820, 131603784, 134978240, 161973888, 164504730, 175471712, 202467360, 219339640, 263207568, 269956480, 323947776, 329009460, 350943424, 404934720, 438679280, 526415136, 539912960, 658018920, 701886848, 809869440, 877358560, 1052830272, 1316037840, 1403773696, 1619738880, 1754717120, 2105660544, 2632075680, 3509434240, 4211321088, 5264151360, 7018868480, 10528302720, 21056605440]

約数ペア:

[(1, 21056605440), (2, 10528302720), (3, 7018868480), (4, 5264151360), (5, 4211321088), (6, 3509434240), (8, 2632075680), (10, 2105660544), (12, 1754717120), (13, 1619738880), (15, 1403773696), (16, 1316037840), (20, 1052830272), (24, 877358560), (26, 809869440), (30, 701886848), (32, 658018920), (39, 539912960), (40, 526415136), (48, 438679280), (52, 404934720), (60, 350943424), (64, 329009460), (65, 323947776), (78, 269956480), (80, 263207568), (96, 219339640), (104, 202467360), (120, 175471712), (128, 164504730), (130, 161973888), (156, 134978240), (160, 131603784), (192, 109669820), (195, 107982592), (208, 101233680), (240, 87735856), (256, 82252365), (260, 80986944), (312, 67489120), (320, 65801892), (384, 54834910), (390, 53991296), (416, 50616840), (480, 43867928), (520, 40493472), (624, 33744560), (640, 32900946), (768, 27417455), (780, 26995648), (832, 25308420), (960, 21933964), (1040, 20246736), (1248, 16872280), (1280, 16450473), (1560, 13497824), (1664, 12654210), (1920, 10966982), (2080, 10123368), (2496, 8436140), (3120, 6748912), (3328, 6327105), (3840, 5483491), (4160, 5061684), (4992, 4218070), (6240, 3374456), (8320, 2530842), (9984, 2109035), (12480, 1687228), (16640, 1265421), (24960, 843614), (49920, 421807)]