56808080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1663}}^1$

素因数の和:1744

約数の個数: 80

約数和(自身を含む): 153513984

約数和(自身を除く): 96705904

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1663, 1708, 2135, 2440, 3326, 3416, 4270, 4880, 6652, 6832, 8315, 8540, 11641, 13304, 16630, 17080, 23282, 26608, 33260, 34160, 46564, 58205, 66520, 93128, 101443, 116410, 133040, 186256, 202886, 232820, 405772, 465640, 507215, 710101, 811544, 931280, 1014430, 1420202, 1623088, 2028860, 2840404, 3550505, 4057720, 5680808, 7101010, 8115440, 11361616, 14202020, 28404040, 56808080]

約数ペア:

[(1, 56808080), (2, 28404040), (4, 14202020), (5, 11361616), (7, 8115440), (8, 7101010), (10, 5680808), (14, 4057720), (16, 3550505), (20, 2840404), (28, 2028860), (35, 1623088), (40, 1420202), (56, 1014430), (61, 931280), (70, 811544), (80, 710101), (112, 507215), (122, 465640), (140, 405772), (244, 232820), (280, 202886), (305, 186256), (427, 133040), (488, 116410), (560, 101443), (610, 93128), (854, 66520), (976, 58205), (1220, 46564), (1663, 34160), (1708, 33260), (2135, 26608), (2440, 23282), (3326, 17080), (3416, 16630), (4270, 13304), (4880, 11641), (6652, 8540), (6832, 8315)]