25687221

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{541}}^1$

素因数の和:594

約数の個数: 48

約数和(自身を含む): 44487360

約数和(自身を除く): 18800139

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 399, 541, 833, 931, 969, 1623, 2261, 2499, 2793, 3787, 6783, 9197, 10279, 11361, 15827, 26509, 27591, 30837, 47481, 64379, 71953, 79527, 174743, 193137, 215859, 450653, 503671, 524229, 1223201, 1351959, 1511013, 3669603, 8562407, 25687221]

約数ペア:

[(1, 25687221), (3, 8562407), (7, 3669603), (17, 1511013), (19, 1351959), (21, 1223201), (49, 524229), (51, 503671), (57, 450653), (119, 215859), (133, 193137), (147, 174743), (323, 79527), (357, 71953), (399, 64379), (541, 47481), (833, 30837), (931, 27591), (969, 26509), (1623, 15827), (2261, 11361), (2499, 10279), (2793, 9197), (3787, 6783)]