21353440

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3607}}^1$

素因数の和:3659

約数の個数: 48

約数和(自身を含む): 51825312

約数和(自身を除く): 30471872

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 3607, 5920, 7214, 14428, 18035, 28856, 36070, 57712, 72140, 115424, 133459, 144280, 266918, 288560, 533836, 577120, 667295, 1067672, 1334590, 2135344, 2669180, 4270688, 5338360, 10676720, 21353440]

約数ペア:

[(1, 21353440), (2, 10676720), (4, 5338360), (5, 4270688), (8, 2669180), (10, 2135344), (16, 1334590), (20, 1067672), (32, 667295), (37, 577120), (40, 533836), (74, 288560), (80, 266918), (148, 144280), (160, 133459), (185, 115424), (296, 72140), (370, 57712), (592, 36070), (740, 28856), (1184, 18035), (1480, 14428), (2960, 7214), (3607, 5920)]