13198420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 28828800

約数和(自身を除く): 15630380

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 103, 149, 172, 206, 215, 298, 412, 430, 515, 596, 745, 860, 1030, 1490, 2060, 2980, 4429, 6407, 8858, 12814, 15347, 17716, 22145, 25628, 30694, 32035, 44290, 61388, 64070, 76735, 88580, 128140, 153470, 306940, 659921, 1319842, 2639684, 3299605, 6599210, 13198420]

約数ペア:

[(1, 13198420), (2, 6599210), (4, 3299605), (5, 2639684), (10, 1319842), (20, 659921), (43, 306940), (86, 153470), (103, 128140), (149, 88580), (172, 76735), (206, 64070), (215, 61388), (298, 44290), (412, 32035), (430, 30694), (515, 25628), (596, 22145), (745, 17716), (860, 15347), (1030, 12814), (1490, 8858), (2060, 6407), (2980, 4429)]