21057240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{379}}^1\times {\mathrm{463}}^1$

素因数の和:856

約数の個数: 64

約数和(自身を含む): 63475200

約数和(自身を除く): 42417960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 379, 463, 758, 926, 1137, 1389, 1516, 1852, 1895, 2274, 2315, 2778, 3032, 3704, 3790, 4548, 4630, 5556, 5685, 6945, 7580, 9096, 9260, 11112, 11370, 13890, 15160, 18520, 22740, 27780, 45480, 55560, 175477, 350954, 526431, 701908, 877385, 1052862, 1403816, 1754770, 2105724, 2632155, 3509540, 4211448, 5264310, 7019080, 10528620, 21057240]

約数ペア:

[(1, 21057240), (2, 10528620), (3, 7019080), (4, 5264310), (5, 4211448), (6, 3509540), (8, 2632155), (10, 2105724), (12, 1754770), (15, 1403816), (20, 1052862), (24, 877385), (30, 701908), (40, 526431), (60, 350954), (120, 175477), (379, 55560), (463, 45480), (758, 27780), (926, 22740), (1137, 18520), (1389, 15160), (1516, 13890), (1852, 11370), (1895, 11112), (2274, 9260), (2315, 9096), (2778, 7580), (3032, 6945), (3704, 5685), (3790, 5556), (4548, 4630)]