18138880

素因数分解:

$2^8\times 5^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:441

約数の個数: 72

約数和(自身を含む): 44739072

約数和(自身を除く): 26600192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 383, 592, 640, 740, 766, 1184, 1280, 1480, 1532, 1915, 2368, 2960, 3064, 3830, 4736, 5920, 6128, 7660, 9472, 11840, 12256, 14171, 15320, 23680, 24512, 28342, 30640, 47360, 49024, 56684, 61280, 70855, 98048, 113368, 122560, 141710, 226736, 245120, 283420, 453472, 490240, 566840, 906944, 1133680, 1813888, 2267360, 3627776, 4534720, 9069440, 18138880]

約数ペア:

[(1, 18138880), (2, 9069440), (4, 4534720), (5, 3627776), (8, 2267360), (10, 1813888), (16, 1133680), (20, 906944), (32, 566840), (37, 490240), (40, 453472), (64, 283420), (74, 245120), (80, 226736), (128, 141710), (148, 122560), (160, 113368), (185, 98048), (256, 70855), (296, 61280), (320, 56684), (370, 49024), (383, 47360), (592, 30640), (640, 28342), (740, 24512), (766, 23680), (1184, 15320), (1280, 14171), (1480, 12256), (1532, 11840), (1915, 9472), (2368, 7660), (2960, 6128), (3064, 5920), (3830, 4736)]