31129520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6379}}^1$

素因数の和:6453

約数の個数: 40

約数和(自身を含む): 73574160

約数和(自身を除く): 42444640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 6379, 12758, 25516, 31895, 51032, 63790, 102064, 127580, 255160, 389119, 510320, 778238, 1556476, 1945595, 3112952, 3891190, 6225904, 7782380, 15564760, 31129520]

約数ペア:

[(1, 31129520), (2, 15564760), (4, 7782380), (5, 6225904), (8, 3891190), (10, 3112952), (16, 1945595), (20, 1556476), (40, 778238), (61, 510320), (80, 389119), (122, 255160), (244, 127580), (305, 102064), (488, 63790), (610, 51032), (976, 31895), (1220, 25516), (2440, 12758), (4880, 6379)]