20131210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 42197760

約数和(自身を除く): 22066550

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 73, 109, 110, 115, 146, 218, 230, 253, 365, 506, 545, 730, 803, 1090, 1199, 1265, 1606, 1679, 2398, 2507, 2530, 3358, 4015, 5014, 5995, 7957, 8030, 8395, 11990, 12535, 15914, 16790, 18469, 25070, 27577, 36938, 39785, 55154, 79570, 87527, 92345, 137885, 175054, 183011, 184690, 275770, 366022, 437635, 875270, 915055, 1830110, 2013121, 4026242, 10065605, 20131210]

約数ペア:

[(1, 20131210), (2, 10065605), (5, 4026242), (10, 2013121), (11, 1830110), (22, 915055), (23, 875270), (46, 437635), (55, 366022), (73, 275770), (109, 184690), (110, 183011), (115, 175054), (146, 137885), (218, 92345), (230, 87527), (253, 79570), (365, 55154), (506, 39785), (545, 36938), (730, 27577), (803, 25070), (1090, 18469), (1199, 16790), (1265, 15914), (1606, 12535), (1679, 11990), (2398, 8395), (2507, 8030), (2530, 7957), (3358, 5995), (4015, 5014)]