19664325

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:183

約数の個数: 72

約数和(自身を含む): 38388168

約数和(自身を除く): 18723843

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 53, 75, 85, 97, 153, 159, 225, 255, 265, 291, 425, 477, 485, 765, 795, 873, 901, 1275, 1325, 1455, 1649, 2385, 2425, 2703, 3825, 3975, 4365, 4505, 4947, 5141, 7275, 8109, 8245, 11925, 13515, 14841, 15423, 21825, 22525, 24735, 25705, 40545, 41225, 46269, 67575, 74205, 77115, 87397, 123675, 128525, 202725, 231345, 262191, 371025, 385575, 436985, 786573, 1156725, 1310955, 2184925, 3932865, 6554775, 19664325]

約数ペア:

[(1, 19664325), (3, 6554775), (5, 3932865), (9, 2184925), (15, 1310955), (17, 1156725), (25, 786573), (45, 436985), (51, 385575), (53, 371025), (75, 262191), (85, 231345), (97, 202725), (153, 128525), (159, 123675), (225, 87397), (255, 77115), (265, 74205), (291, 67575), (425, 46269), (477, 41225), (485, 40545), (765, 25705), (795, 24735), (873, 22525), (901, 21825), (1275, 15423), (1325, 14841), (1455, 13515), (1649, 11925), (2385, 8245), (2425, 8109), (2703, 7275), (3825, 5141), (3975, 4947), (4365, 4505)]