78018320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:400

約数の個数: 80

約数和(自身を含む): 189368832

約数和(自身を除く): 111350512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 163, 193, 248, 310, 326, 386, 496, 620, 652, 772, 815, 965, 1240, 1304, 1544, 1630, 1930, 2480, 2608, 3088, 3260, 3860, 5053, 5983, 6520, 7720, 10106, 11966, 13040, 15440, 20212, 23932, 25265, 29915, 31459, 40424, 47864, 50530, 59830, 62918, 80848, 95728, 101060, 119660, 125836, 157295, 202120, 239320, 251672, 314590, 404240, 478640, 503344, 629180, 975229, 1258360, 1950458, 2516720, 3900916, 4876145, 7801832, 9752290, 15603664, 19504580, 39009160, 78018320]

約数ペア:

[(1, 78018320), (2, 39009160), (4, 19504580), (5, 15603664), (8, 9752290), (10, 7801832), (16, 4876145), (20, 3900916), (31, 2516720), (40, 1950458), (62, 1258360), (80, 975229), (124, 629180), (155, 503344), (163, 478640), (193, 404240), (248, 314590), (310, 251672), (326, 239320), (386, 202120), (496, 157295), (620, 125836), (652, 119660), (772, 101060), (815, 95728), (965, 80848), (1240, 62918), (1304, 59830), (1544, 50530), (1630, 47864), (1930, 40424), (2480, 31459), (2608, 29915), (3088, 25265), (3260, 23932), (3860, 20212), (5053, 15440), (5983, 13040), (6520, 11966), (7720, 10106)]