16401580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{317}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 37396800

約数和(自身を除く): 20995220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 260, 317, 398, 634, 796, 995, 1268, 1585, 1990, 2587, 3170, 3980, 4121, 5174, 6340, 8242, 10348, 12935, 16484, 20605, 25870, 41210, 51740, 63083, 82420, 126166, 252332, 315415, 630830, 820079, 1261660, 1640158, 3280316, 4100395, 8200790, 16401580]

約数ペア:

[(1, 16401580), (2, 8200790), (4, 4100395), (5, 3280316), (10, 1640158), (13, 1261660), (20, 820079), (26, 630830), (52, 315415), (65, 252332), (130, 126166), (199, 82420), (260, 63083), (317, 51740), (398, 41210), (634, 25870), (796, 20605), (995, 16484), (1268, 12935), (1585, 10348), (1990, 8242), (2587, 6340), (3170, 5174), (3980, 4121)]