161921620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{31259}}^1$

素因数の和:31312

約数の個数: 48

約数和(自身を含む): 399127680

約数和(自身を除く): 237206060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 370, 518, 740, 1036, 1295, 2590, 5180, 31259, 62518, 125036, 156295, 218813, 312590, 437626, 625180, 875252, 1094065, 1156583, 2188130, 2313166, 4376260, 4626332, 5782915, 8096081, 11565830, 16192162, 23131660, 32384324, 40480405, 80960810, 161921620]

約数ペア:

[(1, 161921620), (2, 80960810), (4, 40480405), (5, 32384324), (7, 23131660), (10, 16192162), (14, 11565830), (20, 8096081), (28, 5782915), (35, 4626332), (37, 4376260), (70, 2313166), (74, 2188130), (140, 1156583), (148, 1094065), (185, 875252), (259, 625180), (370, 437626), (518, 312590), (740, 218813), (1036, 156295), (1295, 125036), (2590, 62518), (5180, 31259)]