25411280

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:228

約数の個数: 80

約数和(自身を含む): 61871040

約数和(自身を除く): 36459760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 83, 86, 89, 166, 172, 178, 215, 332, 344, 356, 415, 430, 445, 664, 688, 712, 830, 860, 890, 1328, 1424, 1660, 1720, 1780, 3320, 3440, 3560, 3569, 3827, 6640, 7120, 7138, 7387, 7654, 14276, 14774, 15308, 17845, 19135, 28552, 29548, 30616, 35690, 36935, 38270, 57104, 59096, 61232, 71380, 73870, 76540, 118192, 142760, 147740, 153080, 285520, 295480, 306160, 317641, 590960, 635282, 1270564, 1588205, 2541128, 3176410, 5082256, 6352820, 12705640, 25411280]

約数ペア:

[(1, 25411280), (2, 12705640), (4, 6352820), (5, 5082256), (8, 3176410), (10, 2541128), (16, 1588205), (20, 1270564), (40, 635282), (43, 590960), (80, 317641), (83, 306160), (86, 295480), (89, 285520), (166, 153080), (172, 147740), (178, 142760), (215, 118192), (332, 76540), (344, 73870), (356, 71380), (415, 61232), (430, 59096), (445, 57104), (664, 38270), (688, 36935), (712, 35690), (830, 30616), (860, 29548), (890, 28552), (1328, 19135), (1424, 17845), (1660, 15308), (1720, 14774), (1780, 14276), (3320, 7654), (3440, 7387), (3560, 7138), (3569, 7120), (3827, 6640)]