201781980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{1121011}}^1$

素因数の和:1121026

約数の個数: 36

約数和(自身を含む): 612072552

約数和(自身を除く): 410290572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 1121011, 2242022, 3363033, 4484044, 5605055, 6726066, 10089099, 11210110, 13452132, 16815165, 20178198, 22420220, 33630330, 40356396, 50445495, 67260660, 100890990, 201781980]

約数ペア:

[(1, 201781980), (2, 100890990), (3, 67260660), (4, 50445495), (5, 40356396), (6, 33630330), (9, 22420220), (10, 20178198), (12, 16815165), (15, 13452132), (18, 11210110), (20, 10089099), (30, 6726066), (36, 5605055), (45, 4484044), (60, 3363033), (90, 2242022), (180, 1121011)]