219403780

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{28201}}^1$

素因数の和:28599

約数の個数: 24

約数和(自身を含む): 461948760

約数和(自身を除く): 242544980

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 1556, 1945, 3890, 7780, 28201, 56402, 112804, 141005, 282010, 564020, 10970189, 21940378, 43880756, 54850945, 109701890, 219403780]

約数ペア:

[(1, 219403780), (2, 109701890), (4, 54850945), (5, 43880756), (10, 21940378), (20, 10970189), (389, 564020), (778, 282010), (1556, 141005), (1945, 112804), (3890, 56402), (7780, 28201)]