21132860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6563}}^1$

素因数の和:6602

約数の個数: 48

約数和(自身を含む): 52932096

約数和(自身を除く): 31799236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6563, 13126, 26252, 32815, 45941, 65630, 91882, 131260, 150949, 183764, 229705, 301898, 459410, 603796, 754745, 918820, 1056643, 1509490, 2113286, 3018980, 4226572, 5283215, 10566430, 21132860]

約数ペア:

[(1, 21132860), (2, 10566430), (4, 5283215), (5, 4226572), (7, 3018980), (10, 2113286), (14, 1509490), (20, 1056643), (23, 918820), (28, 754745), (35, 603796), (46, 459410), (70, 301898), (92, 229705), (115, 183764), (140, 150949), (161, 131260), (230, 91882), (322, 65630), (460, 45941), (644, 32815), (805, 26252), (1610, 13126), (3220, 6563)]