18999725

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:397

約数の個数: 24

約数和(自身を含む): 24855552

約数和(自身を除く): 5855827

約数列:

[1, 5, 23, 25, 115, 173, 191, 575, 865, 955, 3979, 4325, 4393, 4775, 19895, 21965, 33043, 99475, 109825, 165215, 759989, 826075, 3799945, 18999725]

約数ペア:

[(1, 18999725), (5, 3799945), (23, 826075), (25, 759989), (115, 165215), (173, 109825), (191, 99475), (575, 33043), (865, 21965), (955, 19895), (3979, 4775), (4325, 4393)]