81555448

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 175140000

約数和(自身を除く): 93584552

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 104, 149, 152, 247, 277, 298, 494, 554, 596, 988, 1108, 1192, 1937, 1976, 2216, 2831, 3601, 3874, 5263, 5662, 7202, 7748, 10526, 11324, 14404, 15496, 21052, 22648, 28808, 36803, 41273, 42104, 68419, 73606, 82546, 136838, 147212, 165092, 273676, 294424, 330184, 536549, 547352, 784187, 1073098, 1568374, 2146196, 3136748, 4292392, 6273496, 10194431, 20388862, 40777724, 81555448]

約数ペア:

[(1, 81555448), (2, 40777724), (4, 20388862), (8, 10194431), (13, 6273496), (19, 4292392), (26, 3136748), (38, 2146196), (52, 1568374), (76, 1073098), (104, 784187), (149, 547352), (152, 536549), (247, 330184), (277, 294424), (298, 273676), (494, 165092), (554, 147212), (596, 136838), (988, 82546), (1108, 73606), (1192, 68419), (1937, 42104), (1976, 41273), (2216, 36803), (2831, 28808), (3601, 22648), (3874, 21052), (5263, 15496), (5662, 14404), (7202, 11324), (7748, 10526)]