21575403

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 34650528

約数和(自身を除く): 13075125

約数列:

[1, 3, 9, 23, 27, 37, 69, 81, 111, 207, 313, 333, 621, 851, 939, 999, 1863, 2553, 2817, 2997, 7199, 7659, 8451, 11581, 21597, 22977, 25353, 34743, 64791, 68931, 104229, 194373, 266363, 312687, 583119, 799089, 938061, 2397267, 7191801, 21575403]

約数ペア:

[(1, 21575403), (3, 7191801), (9, 2397267), (23, 938061), (27, 799089), (37, 583119), (69, 312687), (81, 266363), (111, 194373), (207, 104229), (313, 68931), (333, 64791), (621, 34743), (851, 25353), (939, 22977), (999, 21597), (1863, 11581), (2553, 8451), (2817, 7659), (2997, 7199)]