2151940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{809}}^1$

素因数の和:844

約数の個数: 48

約数和(自身を含む): 5443200

約数和(自身を除く): 3291260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 809, 1330, 1618, 2660, 3236, 4045, 5663, 8090, 11326, 15371, 16180, 22652, 28315, 30742, 56630, 61484, 76855, 107597, 113260, 153710, 215194, 307420, 430388, 537985, 1075970, 2151940]

約数ペア:

[(1, 2151940), (2, 1075970), (4, 537985), (5, 430388), (7, 307420), (10, 215194), (14, 153710), (19, 113260), (20, 107597), (28, 76855), (35, 61484), (38, 56630), (70, 30742), (76, 28315), (95, 22652), (133, 16180), (140, 15371), (190, 11326), (266, 8090), (380, 5663), (532, 4045), (665, 3236), (809, 2660), (1330, 1618)]