156720004

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{2543}}^1$

素因数の和:2656

約数の個数: 48

約数和(自身を含む): 328237056

約数和(自身を除く): 171517052

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 71, 124, 142, 217, 284, 434, 497, 868, 994, 1988, 2201, 2543, 4402, 5086, 8804, 10172, 15407, 17801, 30814, 35602, 61628, 71204, 78833, 157666, 180553, 315332, 361106, 551831, 722212, 1103662, 1263871, 2207324, 2527742, 5055484, 5597143, 11194286, 22388572, 39180001, 78360002, 156720004]

約数ペア:

[(1, 156720004), (2, 78360002), (4, 39180001), (7, 22388572), (14, 11194286), (28, 5597143), (31, 5055484), (62, 2527742), (71, 2207324), (124, 1263871), (142, 1103662), (217, 722212), (284, 551831), (434, 361106), (497, 315332), (868, 180553), (994, 157666), (1988, 78833), (2201, 71204), (2543, 61628), (4402, 35602), (5086, 30814), (8804, 17801), (10172, 15407)]