1720420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{509}}^1$

素因数の和:544

約数の個数: 36

約数和(自身を含む): 3919860

約数和(自身を除く): 2199440

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 509, 676, 845, 1018, 1690, 2036, 2545, 3380, 5090, 6617, 10180, 13234, 26468, 33085, 66170, 86021, 132340, 172042, 344084, 430105, 860210, 1720420]

約数ペア:

[(1, 1720420), (2, 860210), (4, 430105), (5, 344084), (10, 172042), (13, 132340), (20, 86021), (26, 66170), (52, 33085), (65, 26468), (130, 13234), (169, 10180), (260, 6617), (338, 5090), (509, 3380), (676, 2545), (845, 2036), (1018, 1690)]