21272958

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:382

約数の個数: 72

約数和(自身を含む): 54419040

約数和(自身を除く): 33146082

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 89, 98, 126, 147, 178, 267, 271, 294, 441, 534, 542, 623, 801, 813, 882, 1246, 1602, 1626, 1869, 1897, 2439, 3738, 3794, 4361, 4878, 5607, 5691, 8722, 11214, 11382, 13083, 13279, 17073, 24119, 26166, 26558, 34146, 39249, 39837, 48238, 72357, 78498, 79674, 119511, 144714, 168833, 217071, 239022, 337666, 434142, 506499, 1012998, 1181831, 1519497, 2363662, 3038994, 3545493, 7090986, 10636479, 21272958]

約数ペア:

[(1, 21272958), (2, 10636479), (3, 7090986), (6, 3545493), (7, 3038994), (9, 2363662), (14, 1519497), (18, 1181831), (21, 1012998), (42, 506499), (49, 434142), (63, 337666), (89, 239022), (98, 217071), (126, 168833), (147, 144714), (178, 119511), (267, 79674), (271, 78498), (294, 72357), (441, 48238), (534, 39837), (542, 39249), (623, 34146), (801, 26558), (813, 26166), (882, 24119), (1246, 17073), (1602, 13279), (1626, 13083), (1869, 11382), (1897, 11214), (2439, 8722), (3738, 5691), (3794, 5607), (4361, 4878)]