25503920

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:342

約数の個数: 80

約数和(自身を含む): 64683360

約数和(自身を除く): 39179440

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 137, 179, 208, 260, 274, 358, 520, 548, 685, 716, 895, 1040, 1096, 1370, 1432, 1781, 1790, 2192, 2327, 2740, 2864, 3562, 3580, 4654, 5480, 7124, 7160, 8905, 9308, 10960, 11635, 14248, 14320, 17810, 18616, 23270, 24523, 28496, 35620, 37232, 46540, 49046, 71240, 93080, 98092, 122615, 142480, 186160, 196184, 245230, 318799, 392368, 490460, 637598, 980920, 1275196, 1593995, 1961840, 2550392, 3187990, 5100784, 6375980, 12751960, 25503920]

約数ペア:

[(1, 25503920), (2, 12751960), (4, 6375980), (5, 5100784), (8, 3187990), (10, 2550392), (13, 1961840), (16, 1593995), (20, 1275196), (26, 980920), (40, 637598), (52, 490460), (65, 392368), (80, 318799), (104, 245230), (130, 196184), (137, 186160), (179, 142480), (208, 122615), (260, 98092), (274, 93080), (358, 71240), (520, 49046), (548, 46540), (685, 37232), (716, 35620), (895, 28496), (1040, 24523), (1096, 23270), (1370, 18616), (1432, 17810), (1781, 14320), (1790, 14248), (2192, 11635), (2327, 10960), (2740, 9308), (2864, 8905), (3562, 7160), (3580, 7124), (4654, 5480)]