12718195

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 19338048

約数和(自身を除く): 6619853

約数列:

[1, 5, 7, 23, 35, 37, 49, 61, 115, 161, 185, 245, 259, 305, 427, 805, 851, 1127, 1295, 1403, 1813, 2135, 2257, 2989, 4255, 5635, 5957, 7015, 9065, 9821, 11285, 14945, 15799, 29785, 41699, 49105, 51911, 68747, 78995, 110593, 208495, 259555, 343735, 363377, 552965, 1816885, 2543639, 12718195]

約数ペア:

[(1, 12718195), (5, 2543639), (7, 1816885), (23, 552965), (35, 363377), (37, 343735), (49, 259555), (61, 208495), (115, 110593), (161, 78995), (185, 68747), (245, 51911), (259, 49105), (305, 41699), (427, 29785), (805, 15799), (851, 14945), (1127, 11285), (1295, 9821), (1403, 9065), (1813, 7015), (2135, 5957), (2257, 5635), (2989, 4255)]