18121915

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 28317600

約数和(自身を除く): 10195685

約数列:

[1, 5, 7, 17, 19, 35, 49, 85, 95, 119, 133, 229, 245, 323, 595, 665, 833, 931, 1145, 1603, 1615, 2261, 3893, 4165, 4351, 4655, 8015, 11221, 11305, 15827, 19465, 21755, 27251, 30457, 56105, 73967, 79135, 136255, 152285, 190757, 213199, 369835, 517769, 953785, 1065995, 2588845, 3624383, 18121915]

約数ペア:

[(1, 18121915), (5, 3624383), (7, 2588845), (17, 1065995), (19, 953785), (35, 517769), (49, 369835), (85, 213199), (95, 190757), (119, 152285), (133, 136255), (229, 79135), (245, 73967), (323, 56105), (595, 30457), (665, 27251), (833, 21755), (931, 19465), (1145, 15827), (1603, 11305), (1615, 11221), (2261, 8015), (3893, 4655), (4165, 4351)]