20839936

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:163

約数の個数: 80

約数和(自身を含む): 46747008

約数和(自身を除く): 25907072

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 101, 104, 124, 128, 202, 208, 248, 256, 403, 404, 416, 496, 512, 806, 808, 832, 992, 1313, 1612, 1616, 1664, 1984, 2626, 3131, 3224, 3232, 3328, 3968, 5252, 6262, 6448, 6464, 6656, 7936, 10504, 12524, 12896, 12928, 15872, 21008, 25048, 25792, 25856, 40703, 42016, 50096, 51584, 51712, 81406, 84032, 100192, 103168, 162812, 168064, 200384, 206336, 325624, 336128, 400768, 651248, 672256, 801536, 1302496, 1603072, 2604992, 5209984, 10419968, 20839936]

約数ペア:

[(1, 20839936), (2, 10419968), (4, 5209984), (8, 2604992), (13, 1603072), (16, 1302496), (26, 801536), (31, 672256), (32, 651248), (52, 400768), (62, 336128), (64, 325624), (101, 206336), (104, 200384), (124, 168064), (128, 162812), (202, 103168), (208, 100192), (248, 84032), (256, 81406), (403, 51712), (404, 51584), (416, 50096), (496, 42016), (512, 40703), (806, 25856), (808, 25792), (832, 25048), (992, 21008), (1313, 15872), (1612, 12928), (1616, 12896), (1664, 12524), (1984, 10504), (2626, 7936), (3131, 6656), (3224, 6464), (3232, 6448), (3328, 6262), (3968, 5252)]