21847245

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{233}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 43130880

約数和(自身を除く): 21283635

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 47, 57, 95, 105, 133, 141, 233, 235, 285, 329, 399, 665, 699, 705, 893, 987, 1165, 1631, 1645, 1995, 2679, 3495, 4427, 4465, 4893, 4935, 6251, 8155, 10951, 13281, 13395, 18753, 22135, 24465, 30989, 31255, 32853, 54755, 66405, 76657, 92967, 93765, 154945, 164265, 208069, 229971, 383285, 464835, 624207, 1040345, 1149855, 1456483, 3121035, 4369449, 7282415, 21847245]

約数ペア:

[(1, 21847245), (3, 7282415), (5, 4369449), (7, 3121035), (15, 1456483), (19, 1149855), (21, 1040345), (35, 624207), (47, 464835), (57, 383285), (95, 229971), (105, 208069), (133, 164265), (141, 154945), (233, 93765), (235, 92967), (285, 76657), (329, 66405), (399, 54755), (665, 32853), (699, 31255), (705, 30989), (893, 24465), (987, 22135), (1165, 18753), (1631, 13395), (1645, 13281), (1995, 10951), (2679, 8155), (3495, 6251), (4427, 4935), (4465, 4893)]