40378891

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 48837600

約数和(自身を除く): 8458709

約数列:

[1, 7, 41, 49, 101, 199, 287, 707, 1393, 2009, 4141, 4949, 8159, 9751, 20099, 28987, 57113, 140693, 202909, 399791, 824059, 984851, 5768413, 40378891]

約数ペア:

[(1, 40378891), (7, 5768413), (41, 984851), (49, 824059), (101, 399791), (199, 202909), (287, 140693), (707, 57113), (1393, 28987), (2009, 20099), (4141, 9751), (4949, 8159)]