71065640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{257}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 166440960

約数和(自身を除く): 95375320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 223, 248, 257, 310, 446, 514, 620, 892, 1028, 1115, 1240, 1285, 1784, 2056, 2230, 2570, 4460, 5140, 6913, 7967, 8920, 10280, 13826, 15934, 27652, 31868, 34565, 39835, 55304, 57311, 63736, 69130, 79670, 114622, 138260, 159340, 229244, 276520, 286555, 318680, 458488, 573110, 1146220, 1776641, 2292440, 3553282, 7106564, 8883205, 14213128, 17766410, 35532820, 71065640]

約数ペア:

[(1, 71065640), (2, 35532820), (4, 17766410), (5, 14213128), (8, 8883205), (10, 7106564), (20, 3553282), (31, 2292440), (40, 1776641), (62, 1146220), (124, 573110), (155, 458488), (223, 318680), (248, 286555), (257, 276520), (310, 229244), (446, 159340), (514, 138260), (620, 114622), (892, 79670), (1028, 69130), (1115, 63736), (1240, 57311), (1285, 55304), (1784, 39835), (2056, 34565), (2230, 31868), (2570, 27652), (4460, 15934), (5140, 13826), (6913, 10280), (7967, 8920)]