28009220

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{4231}}^1$

素因数の和:4571

約数の個数: 24

約数和(自身を含む): 59011008

約数和(自身を除く): 31001788

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3310, 4231, 6620, 8462, 16924, 21155, 42310, 84620, 1400461, 2800922, 5601844, 7002305, 14004610, 28009220]

約数ペア:

[(1, 28009220), (2, 14004610), (4, 7002305), (5, 5601844), (10, 2800922), (20, 1400461), (331, 84620), (662, 42310), (1324, 21155), (1655, 16924), (3310, 8462), (4231, 6620)]