12931940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1301}}^1$

素因数の和:1388

約数の個数: 48

約数和(自身を含む): 31497984

約数和(自身を除く): 18566044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1301, 1420, 1988, 2485, 2602, 4970, 5204, 6505, 9107, 9940, 13010, 18214, 26020, 36428, 45535, 91070, 92371, 182140, 184742, 369484, 461855, 646597, 923710, 1293194, 1847420, 2586388, 3232985, 6465970, 12931940]

約数ペア:

[(1, 12931940), (2, 6465970), (4, 3232985), (5, 2586388), (7, 1847420), (10, 1293194), (14, 923710), (20, 646597), (28, 461855), (35, 369484), (70, 184742), (71, 182140), (140, 92371), (142, 91070), (284, 45535), (355, 36428), (497, 26020), (710, 18214), (994, 13010), (1301, 9940), (1420, 9107), (1988, 6505), (2485, 5204), (2602, 4970)]