81265180

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1\times {\mathrm{379}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 174666240

約数和(自身を除く): 93401060

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 151, 284, 302, 355, 379, 604, 710, 755, 758, 1420, 1510, 1516, 1895, 3020, 3790, 7580, 10721, 21442, 26909, 42884, 53605, 53818, 57229, 107210, 107636, 114458, 134545, 214420, 228916, 269090, 286145, 538180, 572290, 1144580, 4063259, 8126518, 16253036, 20316295, 40632590, 81265180]

約数ペア:

[(1, 81265180), (2, 40632590), (4, 20316295), (5, 16253036), (10, 8126518), (20, 4063259), (71, 1144580), (142, 572290), (151, 538180), (284, 286145), (302, 269090), (355, 228916), (379, 214420), (604, 134545), (710, 114458), (755, 107636), (758, 107210), (1420, 57229), (1510, 53818), (1516, 53605), (1895, 42884), (3020, 26909), (3790, 21442), (7580, 10721)]