21405770040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178381417}}^1$

素因数の和:178381431

約数の個数: 32

約数和(自身を含む): 64217310480

約数和(自身を除く): 42811540440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178381417, 356762834, 535144251, 713525668, 891907085, 1070288502, 1427051336, 1783814170, 2140577004, 2675721255, 3567628340, 4281154008, 5351442510, 7135256680, 10702885020, 21405770040]

約数ペア:

[(1, 21405770040), (2, 10702885020), (3, 7135256680), (4, 5351442510), (5, 4281154008), (6, 3567628340), (8, 2675721255), (10, 2140577004), (12, 1783814170), (15, 1427051336), (20, 1070288502), (24, 891907085), (30, 713525668), (40, 535144251), (60, 356762834), (120, 178381417)]