20258840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72353}}^1$

素因数の和:72371

約数の個数: 32

約数和(自身を含む): 52094880

約数和(自身を除く): 31836040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72353, 144706, 289412, 361765, 506471, 578824, 723530, 1012942, 1447060, 2025884, 2532355, 2894120, 4051768, 5064710, 10129420, 20258840]

約数ペア:

[(1, 20258840), (2, 10129420), (4, 5064710), (5, 4051768), (7, 2894120), (8, 2532355), (10, 2025884), (14, 1447060), (20, 1012942), (28, 723530), (35, 578824), (40, 506471), (56, 361765), (70, 289412), (140, 144706), (280, 72353)]