21229940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3673}}^1$

素因数の和:3716

約数の個数: 36

約数和(自身を含む): 47372556

約数和(自身を除く): 26142616

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3673, 5780, 7346, 14692, 18365, 36730, 62441, 73460, 124882, 249764, 312205, 624410, 1061497, 1248820, 2122994, 4245988, 5307485, 10614970, 21229940]

約数ペア:

[(1, 21229940), (2, 10614970), (4, 5307485), (5, 4245988), (10, 2122994), (17, 1248820), (20, 1061497), (34, 624410), (68, 312205), (85, 249764), (170, 124882), (289, 73460), (340, 62441), (578, 36730), (1156, 18365), (1445, 14692), (2890, 7346), (3673, 5780)]