20028975

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{683}}^1$

素因数の和:736

約数の個数: 48

約数和(自身を含む): 36640512

約数和(自身を除く): 16611537

約数列:

[1, 3, 5, 15, 17, 23, 25, 51, 69, 75, 85, 115, 255, 345, 391, 425, 575, 683, 1173, 1275, 1725, 1955, 2049, 3415, 5865, 9775, 10245, 11611, 15709, 17075, 29325, 34833, 47127, 51225, 58055, 78545, 174165, 235635, 267053, 290275, 392725, 801159, 870825, 1178175, 1335265, 4005795, 6676325, 20028975]

約数ペア:

[(1, 20028975), (3, 6676325), (5, 4005795), (15, 1335265), (17, 1178175), (23, 870825), (25, 801159), (51, 392725), (69, 290275), (75, 267053), (85, 235635), (115, 174165), (255, 78545), (345, 58055), (391, 51225), (425, 47127), (575, 34833), (683, 29325), (1173, 17075), (1275, 15709), (1725, 11611), (1955, 10245), (2049, 9775), (3415, 5865)]