19656375

素因数分解:

$3^1\times 5^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:137

約数の個数: 64

約数和(自身を含む): 35582976

約数和(自身を除く): 15926601

約数列:

[1, 3, 5, 15, 23, 25, 43, 53, 69, 75, 115, 125, 129, 159, 215, 265, 345, 375, 575, 645, 795, 989, 1075, 1219, 1325, 1725, 2279, 2875, 2967, 3225, 3657, 3975, 4945, 5375, 6095, 6625, 6837, 8625, 11395, 14835, 16125, 18285, 19875, 24725, 30475, 34185, 52417, 56975, 74175, 91425, 123625, 152375, 157251, 170925, 262085, 284875, 370875, 457125, 786255, 854625, 1310425, 3931275, 6552125, 19656375]

約数ペア:

[(1, 19656375), (3, 6552125), (5, 3931275), (15, 1310425), (23, 854625), (25, 786255), (43, 457125), (53, 370875), (69, 284875), (75, 262085), (115, 170925), (125, 157251), (129, 152375), (159, 123625), (215, 91425), (265, 74175), (345, 56975), (375, 52417), (575, 34185), (645, 30475), (795, 24725), (989, 19875), (1075, 18285), (1219, 16125), (1325, 14835), (1725, 11395), (2279, 8625), (2875, 6837), (2967, 6625), (3225, 6095), (3657, 5375), (3975, 4945)]