256650784

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1709}}^1$

素因数の和:1770

約数の個数: 72

約数和(自身を含む): 574631820

約数和(自身を除く): 317981036

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 32, 38, 52, 76, 104, 152, 208, 247, 304, 361, 416, 494, 608, 722, 988, 1444, 1709, 1976, 2888, 3418, 3952, 4693, 5776, 6836, 7904, 9386, 11552, 13672, 18772, 22217, 27344, 32471, 37544, 44434, 54688, 64942, 75088, 88868, 129884, 150176, 177736, 259768, 355472, 422123, 519536, 616949, 710944, 844246, 1039072, 1233898, 1688492, 2467796, 3376984, 4935592, 6753968, 8020337, 9871184, 13507936, 16040674, 19742368, 32081348, 64162696, 128325392, 256650784]

約数ペア:

[(1, 256650784), (2, 128325392), (4, 64162696), (8, 32081348), (13, 19742368), (16, 16040674), (19, 13507936), (26, 9871184), (32, 8020337), (38, 6753968), (52, 4935592), (76, 3376984), (104, 2467796), (152, 1688492), (208, 1233898), (247, 1039072), (304, 844246), (361, 710944), (416, 616949), (494, 519536), (608, 422123), (722, 355472), (988, 259768), (1444, 177736), (1709, 150176), (1976, 129884), (2888, 88868), (3418, 75088), (3952, 64942), (4693, 54688), (5776, 44434), (6836, 37544), (7904, 32471), (9386, 27344), (11552, 22217), (13672, 18772)]