19649045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1$

素因数の和:233

約数の個数: 32

約数和(自身を含む): 26629344

約数和(自身を除く): 6980299

約数列:

[1, 5, 13, 41, 65, 73, 101, 205, 365, 505, 533, 949, 1313, 2665, 2993, 4141, 4745, 6565, 7373, 14965, 20705, 36865, 38909, 53833, 95849, 194545, 269165, 302293, 479245, 1511465, 3929809, 19649045]

約数ペア:

[(1, 19649045), (5, 3929809), (13, 1511465), (41, 479245), (65, 302293), (73, 269165), (101, 194545), (205, 95849), (365, 53833), (505, 38909), (533, 36865), (949, 20705), (1313, 14965), (2665, 7373), (2993, 6565), (4141, 4745)]