21788866

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 39787200

約数和(自身を除く): 17998334

約数列:

[1, 2, 11, 17, 22, 23, 34, 46, 149, 187, 253, 289, 298, 374, 391, 506, 578, 782, 1639, 2533, 3179, 3278, 3427, 4301, 5066, 6358, 6647, 6854, 8602, 13294, 27863, 37697, 43061, 55726, 58259, 73117, 75394, 86122, 116518, 146234, 473671, 640849, 947342, 990403, 1281698, 1980806, 10894433, 21788866]

約数ペア:

[(1, 21788866), (2, 10894433), (11, 1980806), (17, 1281698), (22, 990403), (23, 947342), (34, 640849), (46, 473671), (149, 146234), (187, 116518), (253, 86122), (289, 75394), (298, 73117), (374, 58259), (391, 55726), (506, 43061), (578, 37697), (782, 27863), (1639, 13294), (2533, 8602), (3179, 6854), (3278, 6647), (3427, 6358), (4301, 5066)]