27421821

素因数分解:

$3^5\times 7^4\times {\mathrm{47}}^1$

素因数の和:90

約数の個数: 60

約数和(自身を含む): 48939072

約数和(自身を除く): 21517251

約数列:

[1, 3, 7, 9, 21, 27, 47, 49, 63, 81, 141, 147, 189, 243, 329, 343, 423, 441, 567, 987, 1029, 1269, 1323, 1701, 2303, 2401, 2961, 3087, 3807, 3969, 6909, 7203, 8883, 9261, 11421, 11907, 16121, 20727, 21609, 26649, 27783, 48363, 62181, 64827, 79947, 83349, 112847, 145089, 186543, 194481, 338541, 435267, 559629, 583443, 1015623, 1305801, 3046869, 3917403, 9140607, 27421821]

約数ペア:

[(1, 27421821), (3, 9140607), (7, 3917403), (9, 3046869), (21, 1305801), (27, 1015623), (47, 583443), (49, 559629), (63, 435267), (81, 338541), (141, 194481), (147, 186543), (189, 145089), (243, 112847), (329, 83349), (343, 79947), (423, 64827), (441, 62181), (567, 48363), (987, 27783), (1029, 26649), (1269, 21609), (1323, 20727), (1701, 16121), (2303, 11907), (2401, 11421), (2961, 9261), (3087, 8883), (3807, 7203), (3969, 6909)]