25707760

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1301}}^1$

素因数の和:1346

約数の個数: 80

約数和(自身を含む): 67808160

約数和(自身を除く): 42100400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1301, 1520, 1976, 2470, 2602, 3952, 4940, 5204, 6505, 9880, 10408, 13010, 16913, 19760, 20816, 24719, 26020, 33826, 49438, 52040, 67652, 84565, 98876, 104080, 123595, 135304, 169130, 197752, 247190, 270608, 321347, 338260, 395504, 494380, 642694, 676520, 988760, 1285388, 1353040, 1606735, 1977520, 2570776, 3213470, 5141552, 6426940, 12853880, 25707760]

約数ペア:

[(1, 25707760), (2, 12853880), (4, 6426940), (5, 5141552), (8, 3213470), (10, 2570776), (13, 1977520), (16, 1606735), (19, 1353040), (20, 1285388), (26, 988760), (38, 676520), (40, 642694), (52, 494380), (65, 395504), (76, 338260), (80, 321347), (95, 270608), (104, 247190), (130, 197752), (152, 169130), (190, 135304), (208, 123595), (247, 104080), (260, 98876), (304, 84565), (380, 67652), (494, 52040), (520, 49438), (760, 33826), (988, 26020), (1040, 24719), (1235, 20816), (1301, 19760), (1520, 16913), (1976, 13010), (2470, 10408), (2602, 9880), (3952, 6505), (4940, 5204)]