20927392

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:293

約数の個数: 48

約数和(自身を含む): 42747264

約数和(自身を除く): 21819872

約数列:

[1, 2, 4, 8, 16, 32, 61, 71, 122, 142, 151, 244, 284, 302, 488, 568, 604, 976, 1136, 1208, 1952, 2272, 2416, 4331, 4832, 8662, 9211, 10721, 17324, 18422, 21442, 34648, 36844, 42884, 69296, 73688, 85768, 138592, 147376, 171536, 294752, 343072, 653981, 1307962, 2615924, 5231848, 10463696, 20927392]

約数ペア:

[(1, 20927392), (2, 10463696), (4, 5231848), (8, 2615924), (16, 1307962), (32, 653981), (61, 343072), (71, 294752), (122, 171536), (142, 147376), (151, 138592), (244, 85768), (284, 73688), (302, 69296), (488, 42884), (568, 36844), (604, 34648), (976, 21442), (1136, 18422), (1208, 17324), (1952, 10721), (2272, 9211), (2416, 8662), (4331, 4832)]