2003440

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:409

約数の個数: 40

約数和(自身を含む): 4731840

約数和(自身を除く): 2728400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 317, 395, 632, 634, 790, 1264, 1268, 1580, 1585, 2536, 3160, 3170, 5072, 6320, 6340, 12680, 25043, 25360, 50086, 100172, 125215, 200344, 250430, 400688, 500860, 1001720, 2003440]

約数ペア:

[(1, 2003440), (2, 1001720), (4, 500860), (5, 400688), (8, 250430), (10, 200344), (16, 125215), (20, 100172), (40, 50086), (79, 25360), (80, 25043), (158, 12680), (316, 6340), (317, 6320), (395, 5072), (632, 3170), (634, 3160), (790, 2536), (1264, 1585), (1268, 1580)]