21474720

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1657}}^1$

素因数の和:1684

約数の個数: 120

約数和(自身を含む): 75833604

約数和(自身を除く): 54358884

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, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1620, 1657, 2160, 2592, 3240, 3314, 4320, 4971, 6480, 6628, 8285, 9942, 12960, 13256, 14913, 16570, 19884, 24855, 26512, 29826, 33140, 39768, 44739, 49710, 53024, 59652, 66280, 74565, 79536, 89478, 99420, 119304, 132560, 134217, 149130, 159072, 178956, 198840, 223695, 238608, 265120, 268434, 298260, 357912, 397680, 447390, 477216, 536868, 596520, 671085, 715824, 795360, 894780, 1073736, 1193040, 1342170, 1431648, 1789560, 2147472, 2386080, 2684340, 3579120, 4294944, 5368680, 7158240, 10737360, 21474720]

約数ペア:

[(1, 21474720), (2, 10737360), (3, 7158240), (4, 5368680), (5, 4294944), (6, 3579120), (8, 2684340), (9, 2386080), (10, 2147472), (12, 1789560), (15, 1431648), (16, 1342170), (18, 1193040), (20, 1073736), (24, 894780), (27, 795360), (30, 715824), (32, 671085), (36, 596520), (40, 536868), (45, 477216), (48, 447390), (54, 397680), (60, 357912), (72, 298260), (80, 268434), (81, 265120), (90, 238608), (96, 223695), (108, 198840), (120, 178956), (135, 159072), (144, 149130), (160, 134217), (162, 132560), (180, 119304), (216, 99420), (240, 89478), (270, 79536), (288, 74565), (324, 66280), (360, 59652), (405, 53024), (432, 49710), (480, 44739), (540, 39768), (648, 33140), (720, 29826), (810, 26512), (864, 24855), (1080, 19884), (1296, 16570), (1440, 14913), (1620, 13256), (1657, 12960), (2160, 9942), (2592, 8285), (3240, 6628), (3314, 6480), (4320, 4971)]