2009980

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{293}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 4939200

約数和(自身を除く): 2929220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 293, 343, 490, 586, 686, 980, 1172, 1372, 1465, 1715, 2051, 2930, 3430, 4102, 5860, 6860, 8204, 10255, 14357, 20510, 28714, 41020, 57428, 71785, 100499, 143570, 200998, 287140, 401996, 502495, 1004990, 2009980]

約数ペア:

[(1, 2009980), (2, 1004990), (4, 502495), (5, 401996), (7, 287140), (10, 200998), (14, 143570), (20, 100499), (28, 71785), (35, 57428), (49, 41020), (70, 28714), (98, 20510), (140, 14357), (196, 10255), (245, 8204), (293, 6860), (343, 5860), (490, 4102), (586, 3430), (686, 2930), (980, 2051), (1172, 1715), (1372, 1465)]