38712040

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:442

約数の個数: 64

約数和(自身を含む): 90668160

約数和(自身を除く): 51956120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 71, 86, 142, 172, 215, 284, 317, 344, 355, 430, 568, 634, 710, 860, 1268, 1420, 1585, 1720, 2536, 2840, 3053, 3170, 6106, 6340, 12212, 12680, 13631, 15265, 22507, 24424, 27262, 30530, 45014, 54524, 61060, 68155, 90028, 109048, 112535, 122120, 136310, 180056, 225070, 272620, 450140, 545240, 900280, 967801, 1935602, 3871204, 4839005, 7742408, 9678010, 19356020, 38712040]

約数ペア:

[(1, 38712040), (2, 19356020), (4, 9678010), (5, 7742408), (8, 4839005), (10, 3871204), (20, 1935602), (40, 967801), (43, 900280), (71, 545240), (86, 450140), (142, 272620), (172, 225070), (215, 180056), (284, 136310), (317, 122120), (344, 112535), (355, 109048), (430, 90028), (568, 68155), (634, 61060), (710, 54524), (860, 45014), (1268, 30530), (1420, 27262), (1585, 24424), (1720, 22507), (2536, 15265), (2840, 13631), (3053, 12680), (3170, 12212), (6106, 6340)]