28115440

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:434

約数の個数: 80

約数和(自身を含む): 70308000

約数和(自身を除く): 42192560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 53, 76, 80, 95, 106, 152, 190, 212, 265, 304, 349, 380, 424, 530, 698, 760, 848, 1007, 1060, 1396, 1520, 1745, 2014, 2120, 2792, 3490, 4028, 4240, 5035, 5584, 6631, 6980, 8056, 10070, 13262, 13960, 16112, 18497, 20140, 26524, 27920, 33155, 36994, 40280, 53048, 66310, 73988, 80560, 92485, 106096, 132620, 147976, 184970, 265240, 295952, 351443, 369940, 530480, 702886, 739880, 1405772, 1479760, 1757215, 2811544, 3514430, 5623088, 7028860, 14057720, 28115440]

約数ペア:

[(1, 28115440), (2, 14057720), (4, 7028860), (5, 5623088), (8, 3514430), (10, 2811544), (16, 1757215), (19, 1479760), (20, 1405772), (38, 739880), (40, 702886), (53, 530480), (76, 369940), (80, 351443), (95, 295952), (106, 265240), (152, 184970), (190, 147976), (212, 132620), (265, 106096), (304, 92485), (349, 80560), (380, 73988), (424, 66310), (530, 53048), (698, 40280), (760, 36994), (848, 33155), (1007, 27920), (1060, 26524), (1396, 20140), (1520, 18497), (1745, 16112), (2014, 13960), (2120, 13262), (2792, 10070), (3490, 8056), (4028, 6980), (4240, 6631), (5035, 5584)]