18236421

素因数分解:

$3^5\times 7^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 13632507

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 81, 151, 189, 213, 243, 453, 497, 567, 639, 1057, 1359, 1491, 1701, 1917, 3171, 4077, 4473, 5751, 9513, 10721, 12231, 13419, 17253, 28539, 32163, 36693, 40257, 75047, 85617, 96489, 120771, 225141, 256851, 289467, 675423, 868401, 2026269, 2605203, 6078807, 18236421]

約数ペア:

[(1, 18236421), (3, 6078807), (7, 2605203), (9, 2026269), (21, 868401), (27, 675423), (63, 289467), (71, 256851), (81, 225141), (151, 120771), (189, 96489), (213, 85617), (243, 75047), (453, 40257), (497, 36693), (567, 32163), (639, 28539), (1057, 17253), (1359, 13419), (1491, 12231), (1701, 10721), (1917, 9513), (3171, 5751), (4077, 4473)]