1298490040

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{367}}^1\times {\mathrm{449}}^1$

素因数の和:1024

約数の個数: 64

約数和(自身を含む): 2950992000

約数和(自身を除く): 1652501960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 367, 394, 449, 734, 788, 898, 985, 1468, 1576, 1796, 1835, 1970, 2245, 2936, 3592, 3670, 3940, 4490, 7340, 7880, 8980, 14680, 17960, 72299, 88453, 144598, 164783, 176906, 289196, 329566, 353812, 361495, 442265, 578392, 659132, 707624, 722990, 823915, 884530, 1318264, 1445980, 1647830, 1769060, 2891960, 3295660, 3538120, 6591320, 32462251, 64924502, 129849004, 162311255, 259698008, 324622510, 649245020, 1298490040]

約数ペア:

[(1, 1298490040), (2, 649245020), (4, 324622510), (5, 259698008), (8, 162311255), (10, 129849004), (20, 64924502), (40, 32462251), (197, 6591320), (367, 3538120), (394, 3295660), (449, 2891960), (734, 1769060), (788, 1647830), (898, 1445980), (985, 1318264), (1468, 884530), (1576, 823915), (1796, 722990), (1835, 707624), (1970, 659132), (2245, 578392), (2936, 442265), (3592, 361495), (3670, 353812), (3940, 329566), (4490, 289196), (7340, 176906), (7880, 164783), (8980, 144598), (14680, 88453), (17960, 72299)]