81370940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{1619}}^1$

素因数の和:1994

約数の個数: 48

約数和(自身を含む): 195955200

約数和(自身を除く): 114584260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 359, 718, 1436, 1619, 1795, 2513, 3238, 3590, 5026, 6476, 7180, 8095, 10052, 11333, 12565, 16190, 22666, 25130, 32380, 45332, 50260, 56665, 113330, 226660, 581221, 1162442, 2324884, 2906105, 4068547, 5812210, 8137094, 11624420, 16274188, 20342735, 40685470, 81370940]

約数ペア:

[(1, 81370940), (2, 40685470), (4, 20342735), (5, 16274188), (7, 11624420), (10, 8137094), (14, 5812210), (20, 4068547), (28, 2906105), (35, 2324884), (70, 1162442), (140, 581221), (359, 226660), (718, 113330), (1436, 56665), (1619, 50260), (1795, 45332), (2513, 32380), (3238, 25130), (3590, 22666), (5026, 16190), (6476, 12565), (7180, 11333), (8095, 10052)]