20901996

素因数分解:

$2^2\times 3^3\times {\mathrm{103}}^1\times {\mathrm{1879}}^1$

素因数の和:1995

約数の個数: 48

約数和(自身を含む): 54745600

約数和(自身を除く): 33843604

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 103, 108, 206, 309, 412, 618, 927, 1236, 1854, 1879, 2781, 3708, 3758, 5562, 5637, 7516, 11124, 11274, 16911, 22548, 33822, 50733, 67644, 101466, 193537, 202932, 387074, 580611, 774148, 1161222, 1741833, 2322444, 3483666, 5225499, 6967332, 10450998, 20901996]

約数ペア:

[(1, 20901996), (2, 10450998), (3, 6967332), (4, 5225499), (6, 3483666), (9, 2322444), (12, 1741833), (18, 1161222), (27, 774148), (36, 580611), (54, 387074), (103, 202932), (108, 193537), (206, 101466), (309, 67644), (412, 50733), (618, 33822), (927, 22548), (1236, 16911), (1854, 11274), (1879, 11124), (2781, 7516), (3708, 5637), (3758, 5562)]