21581280

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{2141}}^1$

素因数の和:2169

約数の個数: 144

約数和(自身を含む): 84206304

約数和(自身を除く): 62625024

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2141, 2520, 3360, 4282, 5040, 6423, 8564, 10080, 10705, 12846, 14987, 17128, 19269, 21410, 25692, 29974, 32115, 34256, 38538, 42820, 44961, 51384, 59948, 64230, 68512, 74935, 77076, 85640, 89922, 96345, 102768, 119896, 128460, 134883, 149870, 154152, 171280, 179844, 192690, 205536, 224805, 239792, 256920, 269766, 299740, 308304, 342560, 359688, 385380, 449610, 479584, 513840, 539532, 599480, 616608, 674415, 719376, 770760, 899220, 1027680, 1079064, 1198960, 1348830, 1438752, 1541520, 1798440, 2158128, 2397920, 2697660, 3083040, 3596880, 4316256, 5395320, 7193760, 10790640, 21581280]

約数ペア:

[(1, 21581280), (2, 10790640), (3, 7193760), (4, 5395320), (5, 4316256), (6, 3596880), (7, 3083040), (8, 2697660), (9, 2397920), (10, 2158128), (12, 1798440), (14, 1541520), (15, 1438752), (16, 1348830), (18, 1198960), (20, 1079064), (21, 1027680), (24, 899220), (28, 770760), (30, 719376), (32, 674415), (35, 616608), (36, 599480), (40, 539532), (42, 513840), (45, 479584), (48, 449610), (56, 385380), (60, 359688), (63, 342560), (70, 308304), (72, 299740), (80, 269766), (84, 256920), (90, 239792), (96, 224805), (105, 205536), (112, 192690), (120, 179844), (126, 171280), (140, 154152), (144, 149870), (160, 134883), (168, 128460), (180, 119896), (210, 102768), (224, 96345), (240, 89922), (252, 85640), (280, 77076), (288, 74935), (315, 68512), (336, 64230), (360, 59948), (420, 51384), (480, 44961), (504, 42820), (560, 38538), (630, 34256), (672, 32115), (720, 29974), (840, 25692), (1008, 21410), (1120, 19269), (1260, 17128), (1440, 14987), (1680, 12846), (2016, 10705), (2141, 10080), (2520, 8564), (3360, 6423), (4282, 5040)]