21172019905

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1\times {\mathrm{241}}^1\times {\mathrm{1543}}^1$

素因数の和:2041

約数の個数: 32

約数和(自身を含む): 26095576320

約数和(自身を除く): 4923556415

約数列:

[1, 5, 59, 193, 241, 295, 965, 1205, 1543, 7715, 11387, 14219, 46513, 56935, 71095, 91037, 232565, 297799, 371863, 455185, 1488995, 1859315, 2744267, 13721335, 17570141, 21939917, 71769559, 87850705, 109699585, 358847795, 4234403981, 21172019905]

約数ペア:

[(1, 21172019905), (5, 4234403981), (59, 358847795), (193, 109699585), (241, 87850705), (295, 71769559), (965, 21939917), (1205, 17570141), (1543, 13721335), (7715, 2744267), (11387, 1859315), (14219, 1488995), (46513, 455185), (56935, 371863), (71095, 297799), (91037, 232565)]