20452645

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 27216000

約数和(自身を除く): 6763355

約数列:

[1, 5, 19, 41, 59, 89, 95, 205, 295, 445, 779, 1121, 1691, 2419, 3649, 3895, 5251, 5605, 8455, 12095, 18245, 26255, 45961, 69331, 99769, 215291, 229805, 346655, 498845, 1076455, 4090529, 20452645]

約数ペア:

[(1, 20452645), (5, 4090529), (19, 1076455), (41, 498845), (59, 346655), (89, 229805), (95, 215291), (205, 99769), (295, 69331), (445, 45961), (779, 26255), (1121, 18245), (1691, 12095), (2419, 8455), (3649, 5605), (3895, 5251)]