12956620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:378

約数の個数: 48

約数和(自身を含む): 28576800

約数和(自身を除く): 15620180

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 89, 116, 145, 178, 251, 290, 356, 445, 502, 580, 890, 1004, 1255, 1780, 2510, 2581, 5020, 5162, 7279, 10324, 12905, 14558, 22339, 25810, 29116, 36395, 44678, 51620, 72790, 89356, 111695, 145580, 223390, 446780, 647831, 1295662, 2591324, 3239155, 6478310, 12956620]

約数ペア:

[(1, 12956620), (2, 6478310), (4, 3239155), (5, 2591324), (10, 1295662), (20, 647831), (29, 446780), (58, 223390), (89, 145580), (116, 111695), (145, 89356), (178, 72790), (251, 51620), (290, 44678), (356, 36395), (445, 29116), (502, 25810), (580, 22339), (890, 14558), (1004, 12905), (1255, 10324), (1780, 7279), (2510, 5162), (2581, 5020)]