640167168

素因数分解:

$2^8\times 3^1\times {\mathrm{631}}^1\times {\mathrm{1321}}^1$

素因数の和:1971

約数の個数: 72

約数和(自身を含む): 1707770176

約数和(自身を除く): 1067603008

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 631, 768, 1262, 1321, 1893, 2524, 2642, 3786, 3963, 5048, 5284, 7572, 7926, 10096, 10568, 15144, 15852, 20192, 21136, 30288, 31704, 40384, 42272, 60576, 63408, 80768, 84544, 121152, 126816, 161536, 169088, 242304, 253632, 338176, 484608, 507264, 833551, 1014528, 1667102, 2500653, 3334204, 5001306, 6668408, 10002612, 13336816, 20005224, 26673632, 40010448, 53347264, 80020896, 106694528, 160041792, 213389056, 320083584, 640167168]

約数ペア:

[(1, 640167168), (2, 320083584), (3, 213389056), (4, 160041792), (6, 106694528), (8, 80020896), (12, 53347264), (16, 40010448), (24, 26673632), (32, 20005224), (48, 13336816), (64, 10002612), (96, 6668408), (128, 5001306), (192, 3334204), (256, 2500653), (384, 1667102), (631, 1014528), (768, 833551), (1262, 507264), (1321, 484608), (1893, 338176), (2524, 253632), (2642, 242304), (3786, 169088), (3963, 161536), (5048, 126816), (5284, 121152), (7572, 84544), (7926, 80768), (10096, 63408), (10568, 60576), (15144, 42272), (15852, 40384), (20192, 31704), (21136, 30288)]