28870520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{4483}}^1$

素因数の和:4524

約数の個数: 64

約数和(自身を含む): 77483520

約数和(自身を除く): 48613000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 4483, 6440, 8966, 17932, 22415, 31381, 35864, 44830, 62762, 89660, 103109, 125524, 156905, 179320, 206218, 251048, 313810, 412436, 515545, 627620, 721763, 824872, 1031090, 1255240, 1443526, 2062180, 2887052, 3608815, 4124360, 5774104, 7217630, 14435260, 28870520]

約数ペア:

[(1, 28870520), (2, 14435260), (4, 7217630), (5, 5774104), (7, 4124360), (8, 3608815), (10, 2887052), (14, 2062180), (20, 1443526), (23, 1255240), (28, 1031090), (35, 824872), (40, 721763), (46, 627620), (56, 515545), (70, 412436), (92, 313810), (115, 251048), (140, 206218), (161, 179320), (184, 156905), (230, 125524), (280, 103109), (322, 89660), (460, 62762), (644, 44830), (805, 35864), (920, 31381), (1288, 22415), (1610, 17932), (3220, 8966), (4483, 6440)]