2494940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{251}}^1$

素因数の和:338

約数の個数: 48

約数和(自身を含む): 6096384

約数和(自身を除く): 3601444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 251, 284, 355, 497, 502, 710, 994, 1004, 1255, 1420, 1757, 1988, 2485, 2510, 3514, 4970, 5020, 7028, 8785, 9940, 17570, 17821, 35140, 35642, 71284, 89105, 124747, 178210, 249494, 356420, 498988, 623735, 1247470, 2494940]

約数ペア:

[(1, 2494940), (2, 1247470), (4, 623735), (5, 498988), (7, 356420), (10, 249494), (14, 178210), (20, 124747), (28, 89105), (35, 71284), (70, 35642), (71, 35140), (140, 17821), (142, 17570), (251, 9940), (284, 8785), (355, 7028), (497, 5020), (502, 4970), (710, 3514), (994, 2510), (1004, 2485), (1255, 1988), (1420, 1757)]