25913240

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:380

約数の個数: 64

約数和(自身を含む): 61236000

約数和(自身を除く): 35322760

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 89, 116, 145, 178, 232, 251, 290, 356, 445, 502, 580, 712, 890, 1004, 1160, 1255, 1780, 2008, 2510, 2581, 3560, 5020, 5162, 7279, 10040, 10324, 12905, 14558, 20648, 22339, 25810, 29116, 36395, 44678, 51620, 58232, 72790, 89356, 103240, 111695, 145580, 178712, 223390, 291160, 446780, 647831, 893560, 1295662, 2591324, 3239155, 5182648, 6478310, 12956620, 25913240]

約数ペア:

[(1, 25913240), (2, 12956620), (4, 6478310), (5, 5182648), (8, 3239155), (10, 2591324), (20, 1295662), (29, 893560), (40, 647831), (58, 446780), (89, 291160), (116, 223390), (145, 178712), (178, 145580), (232, 111695), (251, 103240), (290, 89356), (356, 72790), (445, 58232), (502, 51620), (580, 44678), (712, 36395), (890, 29116), (1004, 25810), (1160, 22339), (1255, 20648), (1780, 14558), (2008, 12905), (2510, 10324), (2581, 10040), (3560, 7279), (5020, 5162)]