20839875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{467}}^1$

素因数の和:509

約数の個数: 64

約数和(自身を含む): 42052608

約数和(自身を除く): 21212733

約数列:

[1, 3, 5, 7, 15, 17, 21, 25, 35, 51, 75, 85, 105, 119, 125, 175, 255, 357, 375, 425, 467, 525, 595, 875, 1275, 1401, 1785, 2125, 2335, 2625, 2975, 3269, 6375, 7005, 7939, 8925, 9807, 11675, 14875, 16345, 23817, 35025, 39695, 44625, 49035, 55573, 58375, 81725, 119085, 166719, 175125, 198475, 245175, 277865, 408625, 595425, 833595, 992375, 1225875, 1389325, 2977125, 4167975, 6946625, 20839875]

約数ペア:

[(1, 20839875), (3, 6946625), (5, 4167975), (7, 2977125), (15, 1389325), (17, 1225875), (21, 992375), (25, 833595), (35, 595425), (51, 408625), (75, 277865), (85, 245175), (105, 198475), (119, 175125), (125, 166719), (175, 119085), (255, 81725), (357, 58375), (375, 55573), (425, 49035), (467, 44625), (525, 39695), (595, 35025), (875, 23817), (1275, 16345), (1401, 14875), (1785, 11675), (2125, 9807), (2335, 8925), (2625, 7939), (2975, 7005), (3269, 6375)]