28389375

素因数分解:

$3^2\times 5^4\times 7^2\times {\mathrm{103}}^1$

素因数の和:143

約数の個数: 90

約数和(自身を含む): 60186984

約数和(自身を除く): 31797609

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 49, 63, 75, 103, 105, 125, 147, 175, 225, 245, 309, 315, 375, 441, 515, 525, 625, 721, 735, 875, 927, 1125, 1225, 1545, 1575, 1875, 2163, 2205, 2575, 2625, 3605, 3675, 4375, 4635, 5047, 5625, 6125, 6489, 7725, 7875, 10815, 11025, 12875, 13125, 15141, 18025, 18375, 23175, 25235, 30625, 32445, 38625, 39375, 45423, 54075, 55125, 64375, 75705, 90125, 91875, 115875, 126175, 162225, 193125, 227115, 270375, 275625, 378525, 450625, 579375, 630875, 811125, 1135575, 1351875, 1892625, 3154375, 4055625, 5677875, 9463125, 28389375]

約数ペア:

[(1, 28389375), (3, 9463125), (5, 5677875), (7, 4055625), (9, 3154375), (15, 1892625), (21, 1351875), (25, 1135575), (35, 811125), (45, 630875), (49, 579375), (63, 450625), (75, 378525), (103, 275625), (105, 270375), (125, 227115), (147, 193125), (175, 162225), (225, 126175), (245, 115875), (309, 91875), (315, 90125), (375, 75705), (441, 64375), (515, 55125), (525, 54075), (625, 45423), (721, 39375), (735, 38625), (875, 32445), (927, 30625), (1125, 25235), (1225, 23175), (1545, 18375), (1575, 18025), (1875, 15141), (2163, 13125), (2205, 12875), (2575, 11025), (2625, 10815), (3605, 7875), (3675, 7725), (4375, 6489), (4635, 6125), (5047, 5625)]