20797552

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^2$

素因数の和:150

約数の個数: 60

約数和(自身を含む): 44599080

約数和(自身を除く): 23801528

約数列:

[1, 2, 4, 8, 16, 19, 37, 38, 43, 74, 76, 86, 148, 152, 172, 296, 304, 344, 592, 688, 703, 817, 1406, 1591, 1634, 1849, 2812, 3182, 3268, 3698, 5624, 6364, 6536, 7396, 11248, 12728, 13072, 14792, 25456, 29584, 30229, 35131, 60458, 68413, 70262, 120916, 136826, 140524, 241832, 273652, 281048, 483664, 547304, 562096, 1094608, 1299847, 2599694, 5199388, 10398776, 20797552]

約数ペア:

[(1, 20797552), (2, 10398776), (4, 5199388), (8, 2599694), (16, 1299847), (19, 1094608), (37, 562096), (38, 547304), (43, 483664), (74, 281048), (76, 273652), (86, 241832), (148, 140524), (152, 136826), (172, 120916), (296, 70262), (304, 68413), (344, 60458), (592, 35131), (688, 30229), (703, 29584), (817, 25456), (1406, 14792), (1591, 13072), (1634, 12728), (1849, 11248), (2812, 7396), (3182, 6536), (3268, 6364), (3698, 5624)]