28399875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1$

素因数の和:405

約数の個数: 64

約数和(自身を含む): 55910400

約数和(自身を除く): 27510525

約数列:

[1, 3, 5, 7, 15, 21, 25, 31, 35, 75, 93, 105, 125, 155, 175, 217, 349, 375, 465, 525, 651, 775, 875, 1047, 1085, 1745, 2325, 2443, 2625, 3255, 3875, 5235, 5425, 7329, 8725, 10819, 11625, 12215, 16275, 26175, 27125, 32457, 36645, 43625, 54095, 61075, 75733, 81375, 130875, 162285, 183225, 227199, 270475, 305375, 378665, 811425, 916125, 1135995, 1352375, 1893325, 4057125, 5679975, 9466625, 28399875]

約数ペア:

[(1, 28399875), (3, 9466625), (5, 5679975), (7, 4057125), (15, 1893325), (21, 1352375), (25, 1135995), (31, 916125), (35, 811425), (75, 378665), (93, 305375), (105, 270475), (125, 227199), (155, 183225), (175, 162285), (217, 130875), (349, 81375), (375, 75733), (465, 61075), (525, 54095), (651, 43625), (775, 36645), (875, 32457), (1047, 27125), (1085, 26175), (1745, 16275), (2325, 12215), (2443, 11625), (2625, 10819), (3255, 8725), (3875, 7329), (5235, 5425)]