20181990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{35407}}^1$

素因数の和:35436

約数の個数: 32

約数和(自身を含む): 50987520

約数和(自身を除く): 30805530

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 190, 285, 570, 35407, 70814, 106221, 177035, 212442, 354070, 531105, 672733, 1062210, 1345466, 2018199, 3363665, 4036398, 6727330, 10090995, 20181990]

約数ペア:

[(1, 20181990), (2, 10090995), (3, 6727330), (5, 4036398), (6, 3363665), (10, 2018199), (15, 1345466), (19, 1062210), (30, 672733), (38, 531105), (57, 354070), (95, 212442), (114, 177035), (190, 106221), (285, 70814), (570, 35407)]