21961875

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1$

素因数の和:106

約数の個数: 80

約数和(自身を含む): 42511392

約数和(自身を除く): 20549517

約数列:

[1, 3, 5, 13, 15, 17, 25, 39, 51, 53, 65, 75, 85, 125, 159, 195, 221, 255, 265, 325, 375, 425, 625, 663, 689, 795, 901, 975, 1105, 1275, 1325, 1625, 1875, 2067, 2125, 2703, 3315, 3445, 3975, 4505, 4875, 5525, 6375, 6625, 8125, 10335, 10625, 11713, 13515, 16575, 17225, 19875, 22525, 24375, 27625, 31875, 33125, 35139, 51675, 58565, 67575, 82875, 86125, 99375, 112625, 138125, 175695, 258375, 292825, 337875, 414375, 430625, 563125, 878475, 1291875, 1464125, 1689375, 4392375, 7320625, 21961875]

約数ペア:

[(1, 21961875), (3, 7320625), (5, 4392375), (13, 1689375), (15, 1464125), (17, 1291875), (25, 878475), (39, 563125), (51, 430625), (53, 414375), (65, 337875), (75, 292825), (85, 258375), (125, 175695), (159, 138125), (195, 112625), (221, 99375), (255, 86125), (265, 82875), (325, 67575), (375, 58565), (425, 51675), (625, 35139), (663, 33125), (689, 31875), (795, 27625), (901, 24375), (975, 22525), (1105, 19875), (1275, 17225), (1325, 16575), (1625, 13515), (1875, 11713), (2067, 10625), (2125, 10335), (2703, 8125), (3315, 6625), (3445, 6375), (3975, 5525), (4505, 4875)]