21025430

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{337}}^1\times {\mathrm{367}}^1$

素因数の和:728

約数の個数: 32

約数和(自身を含む): 40300416

約数和(自身を除く): 19274986

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 337, 367, 674, 734, 1685, 1835, 3370, 3670, 5729, 6239, 11458, 12478, 28645, 31195, 57290, 62390, 123679, 247358, 618395, 1236790, 2102543, 4205086, 10512715, 21025430]

約数ペア:

[(1, 21025430), (2, 10512715), (5, 4205086), (10, 2102543), (17, 1236790), (34, 618395), (85, 247358), (170, 123679), (337, 62390), (367, 57290), (674, 31195), (734, 28645), (1685, 12478), (1835, 11458), (3370, 6239), (3670, 5729)]