20699625

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^2\times {\mathrm{191}}^1$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 36781056

約数和(自身を除く): 16081431

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 191, 255, 289, 375, 425, 573, 867, 955, 1275, 1445, 2125, 2865, 3247, 4335, 4775, 6375, 7225, 9741, 14325, 16235, 21675, 23875, 36125, 48705, 55199, 71625, 81175, 108375, 165597, 243525, 275995, 405875, 827985, 1217625, 1379975, 4139925, 6899875, 20699625]

約数ペア:

[(1, 20699625), (3, 6899875), (5, 4139925), (15, 1379975), (17, 1217625), (25, 827985), (51, 405875), (75, 275995), (85, 243525), (125, 165597), (191, 108375), (255, 81175), (289, 71625), (375, 55199), (425, 48705), (573, 36125), (867, 23875), (955, 21675), (1275, 16235), (1445, 14325), (2125, 9741), (2865, 7225), (3247, 6375), (4335, 4775)]