31002860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3119}}^1$

素因数の和:3206

約数の個数: 48

約数和(自身を含む): 75479040

約数和(自身を除く): 44476180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 3119, 4970, 6238, 9940, 12476, 15595, 21833, 31190, 43666, 62380, 87332, 109165, 218330, 221449, 436660, 442898, 885796, 1107245, 1550143, 2214490, 3100286, 4428980, 6200572, 7750715, 15501430, 31002860]

約数ペア:

[(1, 31002860), (2, 15501430), (4, 7750715), (5, 6200572), (7, 4428980), (10, 3100286), (14, 2214490), (20, 1550143), (28, 1107245), (35, 885796), (70, 442898), (71, 436660), (140, 221449), (142, 218330), (284, 109165), (355, 87332), (497, 62380), (710, 43666), (994, 31190), (1420, 21833), (1988, 15595), (2485, 12476), (3119, 9940), (4970, 6238)]