21059168

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:148

約数の個数: 96

約数和(自身を含む): 48771072

約数和(自身を除く): 27711904

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 31, 32, 46, 52, 62, 71, 92, 104, 124, 142, 184, 208, 248, 284, 299, 368, 403, 416, 496, 568, 598, 713, 736, 806, 923, 992, 1136, 1196, 1426, 1612, 1633, 1846, 2201, 2272, 2392, 2852, 3224, 3266, 3692, 4402, 4784, 5704, 6448, 6532, 7384, 8804, 9269, 9568, 11408, 12896, 13064, 14768, 17608, 18538, 21229, 22816, 26128, 28613, 29536, 35216, 37076, 42458, 50623, 52256, 57226, 70432, 74152, 84916, 101246, 114452, 148304, 169832, 202492, 228904, 296608, 339664, 404984, 457808, 658099, 679328, 809968, 915616, 1316198, 1619936, 2632396, 5264792, 10529584, 21059168]

約数ペア:

[(1, 21059168), (2, 10529584), (4, 5264792), (8, 2632396), (13, 1619936), (16, 1316198), (23, 915616), (26, 809968), (31, 679328), (32, 658099), (46, 457808), (52, 404984), (62, 339664), (71, 296608), (92, 228904), (104, 202492), (124, 169832), (142, 148304), (184, 114452), (208, 101246), (248, 84916), (284, 74152), (299, 70432), (368, 57226), (403, 52256), (416, 50623), (496, 42458), (568, 37076), (598, 35216), (713, 29536), (736, 28613), (806, 26128), (923, 22816), (992, 21229), (1136, 18538), (1196, 17608), (1426, 14768), (1612, 13064), (1633, 12896), (1846, 11408), (2201, 9568), (2272, 9269), (2392, 8804), (2852, 7384), (3224, 6532), (3266, 6448), (3692, 5704), (4402, 4784)]