1280556

素因数分解:

$2^2\times 3^3\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:251

約数の個数: 48

約数和(自身を含む): 3386880

約数和(自身を除く): 2106324

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 71, 108, 142, 167, 213, 284, 334, 426, 501, 639, 668, 852, 1002, 1278, 1503, 1917, 2004, 2556, 3006, 3834, 4509, 6012, 7668, 9018, 11857, 18036, 23714, 35571, 47428, 71142, 106713, 142284, 213426, 320139, 426852, 640278, 1280556]

約数ペア:

[(1, 1280556), (2, 640278), (3, 426852), (4, 320139), (6, 213426), (9, 142284), (12, 106713), (18, 71142), (27, 47428), (36, 35571), (54, 23714), (71, 18036), (108, 11857), (142, 9018), (167, 7668), (213, 6012), (284, 4509), (334, 3834), (426, 3006), (501, 2556), (639, 2004), (668, 1917), (852, 1503), (1002, 1278)]