16821990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{601}}^1$

素因数の和:925

約数の個数: 48

約数和(自身を含む): 43950816

約数和(自身を除く): 27128826

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 311, 601, 622, 933, 1202, 1555, 1803, 1866, 2799, 3005, 3110, 3606, 4665, 5409, 5598, 6010, 9015, 9330, 10818, 13995, 18030, 27045, 27990, 54090, 186911, 373822, 560733, 934555, 1121466, 1682199, 1869110, 2803665, 3364398, 5607330, 8410995, 16821990]

約数ペア:

[(1, 16821990), (2, 8410995), (3, 5607330), (5, 3364398), (6, 2803665), (9, 1869110), (10, 1682199), (15, 1121466), (18, 934555), (30, 560733), (45, 373822), (90, 186911), (311, 54090), (601, 27990), (622, 27045), (933, 18030), (1202, 13995), (1555, 10818), (1803, 9330), (1866, 9015), (2799, 6010), (3005, 5598), (3110, 5409), (3606, 4665)]