20118905

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:337

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 7314823

約数列:

[1, 5, 17, 23, 41, 85, 115, 205, 251, 391, 697, 943, 1255, 1955, 3485, 4267, 4715, 5773, 10291, 16031, 21335, 28865, 51455, 80155, 98141, 174947, 236693, 490705, 874735, 1183465, 4023781, 20118905]

約数ペア:

[(1, 20118905), (5, 4023781), (17, 1183465), (23, 874735), (41, 490705), (85, 236693), (115, 174947), (205, 98141), (251, 80155), (391, 51455), (697, 28865), (943, 21335), (1255, 16031), (1955, 10291), (3485, 5773), (4267, 4715)]