20161257221

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1\times {\mathrm{557}}^1$

素因数の和:1074

約数の個数: 48

約数和(自身を含む): 24686544960

約数和(自身を除く): 4525287739

約数列:

[1, 7, 41, 43, 49, 287, 301, 419, 557, 1763, 2009, 2107, 2933, 3899, 12341, 17179, 18017, 20531, 22837, 23951, 27293, 86387, 120253, 126119, 159859, 167657, 233383, 738697, 841771, 882833, 981991, 1119013, 1173599, 1633681, 5170879, 6873937, 9568703, 10035469, 11435767, 36196153, 48117559, 66980921, 70248283, 411454229, 468866447, 491737981, 2880179603, 20161257221]

約数ペア:

[(1, 20161257221), (7, 2880179603), (41, 491737981), (43, 468866447), (49, 411454229), (287, 70248283), (301, 66980921), (419, 48117559), (557, 36196153), (1763, 11435767), (2009, 10035469), (2107, 9568703), (2933, 6873937), (3899, 5170879), (12341, 1633681), (17179, 1173599), (18017, 1119013), (20531, 981991), (22837, 882833), (23951, 841771), (27293, 738697), (86387, 233383), (120253, 167657), (126119, 159859)]