21147005

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 29410560

約数和(自身を除く): 8263555

約数列:

[1, 5, 11, 23, 55, 73, 115, 229, 253, 365, 803, 1145, 1265, 1679, 2519, 4015, 5267, 8395, 12595, 16717, 18469, 26335, 57937, 83585, 92345, 183887, 289685, 384491, 919435, 1922455, 4229401, 21147005]

約数ペア:

[(1, 21147005), (5, 4229401), (11, 1922455), (23, 919435), (55, 384491), (73, 289685), (115, 183887), (229, 92345), (253, 83585), (365, 57937), (803, 26335), (1145, 18469), (1265, 16717), (1679, 12595), (2519, 8395), (4015, 5267)]