8903440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1223}}^1$

素因数の和:1256

約数の個数: 80

約数和(自身を含む): 25498368

約数和(自身を除く): 16594928

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 52, 56, 65, 70, 80, 91, 104, 112, 130, 140, 182, 208, 260, 280, 364, 455, 520, 560, 728, 910, 1040, 1223, 1456, 1820, 2446, 3640, 4892, 6115, 7280, 8561, 9784, 12230, 15899, 17122, 19568, 24460, 31798, 34244, 42805, 48920, 63596, 68488, 79495, 85610, 97840, 111293, 127192, 136976, 158990, 171220, 222586, 254384, 317980, 342440, 445172, 556465, 635960, 684880, 890344, 1112930, 1271920, 1780688, 2225860, 4451720, 8903440]

約数ペア:

[(1, 8903440), (2, 4451720), (4, 2225860), (5, 1780688), (7, 1271920), (8, 1112930), (10, 890344), (13, 684880), (14, 635960), (16, 556465), (20, 445172), (26, 342440), (28, 317980), (35, 254384), (40, 222586), (52, 171220), (56, 158990), (65, 136976), (70, 127192), (80, 111293), (91, 97840), (104, 85610), (112, 79495), (130, 68488), (140, 63596), (182, 48920), (208, 42805), (260, 34244), (280, 31798), (364, 24460), (455, 19568), (520, 17122), (560, 15899), (728, 12230), (910, 9784), (1040, 8561), (1223, 7280), (1456, 6115), (1820, 4892), (2446, 3640)]