21028070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4231}}^1$

素因数の和:4316

約数の個数: 32

約数和(自身を含む): 43877376

約数和(自身を除く): 22849306

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 142, 355, 497, 710, 994, 2485, 4231, 4970, 8462, 21155, 29617, 42310, 59234, 148085, 296170, 300401, 600802, 1502005, 2102807, 3004010, 4205614, 10514035, 21028070]

約数ペア:

[(1, 21028070), (2, 10514035), (5, 4205614), (7, 3004010), (10, 2102807), (14, 1502005), (35, 600802), (70, 300401), (71, 296170), (142, 148085), (355, 59234), (497, 42310), (710, 29617), (994, 21155), (2485, 8462), (4231, 4970)]