28910440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1049}}^1$

素因数の和:1126

約数の個数: 64

約数和(自身を含む): 71442000

約数和(自身を除く): 42531560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 212, 260, 265, 424, 520, 530, 689, 1049, 1060, 1378, 2098, 2120, 2756, 3445, 4196, 5245, 5512, 6890, 8392, 10490, 13637, 13780, 20980, 27274, 27560, 41960, 54548, 55597, 68185, 109096, 111194, 136370, 222388, 272740, 277985, 444776, 545480, 555970, 722761, 1111940, 1445522, 2223880, 2891044, 3613805, 5782088, 7227610, 14455220, 28910440]

約数ペア:

[(1, 28910440), (2, 14455220), (4, 7227610), (5, 5782088), (8, 3613805), (10, 2891044), (13, 2223880), (20, 1445522), (26, 1111940), (40, 722761), (52, 555970), (53, 545480), (65, 444776), (104, 277985), (106, 272740), (130, 222388), (212, 136370), (260, 111194), (265, 109096), (424, 68185), (520, 55597), (530, 54548), (689, 41960), (1049, 27560), (1060, 27274), (1378, 20980), (2098, 13780), (2120, 13637), (2756, 10490), (3445, 8392), (4196, 6890), (5245, 5512)]