31001440

素因数分解:

$2^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2729}}^1$

素因数の和:2815

約数の個数: 48

約数和(自身を含む): 74299680

約数和(自身を除く): 43298240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 71, 80, 142, 160, 284, 355, 568, 710, 1136, 1420, 2272, 2729, 2840, 5458, 5680, 10916, 11360, 13645, 21832, 27290, 43664, 54580, 87328, 109160, 193759, 218320, 387518, 436640, 775036, 968795, 1550072, 1937590, 3100144, 3875180, 6200288, 7750360, 15500720, 31001440]

約数ペア:

[(1, 31001440), (2, 15500720), (4, 7750360), (5, 6200288), (8, 3875180), (10, 3100144), (16, 1937590), (20, 1550072), (32, 968795), (40, 775036), (71, 436640), (80, 387518), (142, 218320), (160, 193759), (284, 109160), (355, 87328), (568, 54580), (710, 43664), (1136, 27290), (1420, 21832), (2272, 13645), (2729, 11360), (2840, 10916), (5458, 5680)]