123420280

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{17047}}^1$

素因数の和:17239

約数の個数: 32

約数和(自身を含む): 279246240

約数和(自身を除く): 155825960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 17047, 34094, 68188, 85235, 136376, 170470, 340940, 681880, 3085507, 6171014, 12342028, 15427535, 24684056, 30855070, 61710140, 123420280]

約数ペア:

[(1, 123420280), (2, 61710140), (4, 30855070), (5, 24684056), (8, 15427535), (10, 12342028), (20, 6171014), (40, 3085507), (181, 681880), (362, 340940), (724, 170470), (905, 136376), (1448, 85235), (1810, 68188), (3620, 34094), (7240, 17047)]