21572480

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{911}}^1$

素因数の和:967

約数の個数: 64

約数和(自身を含む): 53023680

約数和(自身を除く): 31451200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 911, 1184, 1480, 1822, 2368, 2960, 3644, 4555, 4736, 5920, 7288, 9110, 11840, 14576, 18220, 23680, 29152, 33707, 36440, 58304, 67414, 72880, 116608, 134828, 145760, 168535, 269656, 291520, 337070, 539312, 583040, 674140, 1078624, 1348280, 2157248, 2696560, 4314496, 5393120, 10786240, 21572480]

約数ペア:

[(1, 21572480), (2, 10786240), (4, 5393120), (5, 4314496), (8, 2696560), (10, 2157248), (16, 1348280), (20, 1078624), (32, 674140), (37, 583040), (40, 539312), (64, 337070), (74, 291520), (80, 269656), (128, 168535), (148, 145760), (160, 134828), (185, 116608), (296, 72880), (320, 67414), (370, 58304), (592, 36440), (640, 33707), (740, 29152), (911, 23680), (1184, 18220), (1480, 14576), (1822, 11840), (2368, 9110), (2960, 7288), (3644, 5920), (4555, 4736)]