21272835

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{347}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 35212032

約数和(自身を除く): 13939197

約数列:

[1, 3, 5, 15, 61, 67, 183, 201, 305, 335, 347, 915, 1005, 1041, 1735, 4087, 5205, 12261, 20435, 21167, 23249, 61305, 63501, 69747, 105835, 116245, 317505, 348735, 1418189, 4254567, 7090945, 21272835]

約数ペア:

[(1, 21272835), (3, 7090945), (5, 4254567), (15, 1418189), (61, 348735), (67, 317505), (183, 116245), (201, 105835), (305, 69747), (335, 63501), (347, 61305), (915, 23249), (1005, 21167), (1041, 20435), (1735, 12261), (4087, 5205)]