19994775

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^2\times {\mathrm{317}}^1$

素因数の和:388

約数の個数: 36

約数和(自身を含む): 34345272

約数和(自身を除く): 14350497

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 317, 435, 725, 841, 951, 1585, 2175, 2523, 4205, 4755, 7925, 9193, 12615, 21025, 23775, 27579, 45965, 63075, 137895, 229825, 266597, 689475, 799791, 1332985, 3998955, 6664925, 19994775]

約数ペア:

[(1, 19994775), (3, 6664925), (5, 3998955), (15, 1332985), (25, 799791), (29, 689475), (75, 266597), (87, 229825), (145, 137895), (317, 63075), (435, 45965), (725, 27579), (841, 23775), (951, 21025), (1585, 12615), (2175, 9193), (2523, 7925), (4205, 4755)]