28771700

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{797}}^1$

素因数の和:849

約数の個数: 54

約数和(自身を含む): 65976246

約数和(自身を除く): 37204546

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 361, 380, 475, 722, 797, 950, 1444, 1594, 1805, 1900, 3188, 3610, 3985, 7220, 7970, 9025, 15143, 15940, 18050, 19925, 30286, 36100, 39850, 60572, 75715, 79700, 151430, 287717, 302860, 378575, 575434, 757150, 1150868, 1438585, 1514300, 2877170, 5754340, 7192925, 14385850, 28771700]

約数ペア:

[(1, 28771700), (2, 14385850), (4, 7192925), (5, 5754340), (10, 2877170), (19, 1514300), (20, 1438585), (25, 1150868), (38, 757150), (50, 575434), (76, 378575), (95, 302860), (100, 287717), (190, 151430), (361, 79700), (380, 75715), (475, 60572), (722, 39850), (797, 36100), (950, 30286), (1444, 19925), (1594, 18050), (1805, 15940), (1900, 15143), (3188, 9025), (3610, 7970), (3985, 7220)]