20818875

素因数分解:

$3^1\times 5^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1$

素因数の和:146

約数の個数: 96

約数和(自身を含む): 44388864

約数和(自身を除く): 23569989

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 49, 55, 75, 77, 103, 105, 125, 147, 165, 175, 231, 245, 275, 309, 375, 385, 515, 525, 539, 721, 735, 825, 875, 1133, 1155, 1225, 1375, 1545, 1617, 1925, 2163, 2575, 2625, 2695, 3399, 3605, 3675, 4125, 5047, 5665, 5775, 6125, 7725, 7931, 8085, 9625, 10815, 12875, 13475, 15141, 16995, 18025, 18375, 23793, 25235, 28325, 28875, 38625, 39655, 40425, 54075, 55517, 67375, 75705, 84975, 90125, 118965, 126175, 141625, 166551, 198275, 202125, 270375, 277585, 378525, 424875, 594825, 630875, 832755, 991375, 1387925, 1892625, 2974125, 4163775, 6939625, 20818875]

約数ペア:

[(1, 20818875), (3, 6939625), (5, 4163775), (7, 2974125), (11, 1892625), (15, 1387925), (21, 991375), (25, 832755), (33, 630875), (35, 594825), (49, 424875), (55, 378525), (75, 277585), (77, 270375), (103, 202125), (105, 198275), (125, 166551), (147, 141625), (165, 126175), (175, 118965), (231, 90125), (245, 84975), (275, 75705), (309, 67375), (375, 55517), (385, 54075), (515, 40425), (525, 39655), (539, 38625), (721, 28875), (735, 28325), (825, 25235), (875, 23793), (1133, 18375), (1155, 18025), (1225, 16995), (1375, 15141), (1545, 13475), (1617, 12875), (1925, 10815), (2163, 9625), (2575, 8085), (2625, 7931), (2695, 7725), (3399, 6125), (3605, 5775), (3675, 5665), (4125, 5047)]