20627784

素因数分解:

$2^3\times 3^9\times {\mathrm{131}}^1$

素因数の和:164

約数の個数: 80

約数和(自身を含む): 58457520

約数和(自身を除く): 37829736

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 131, 162, 216, 243, 262, 324, 393, 486, 524, 648, 729, 786, 972, 1048, 1179, 1458, 1572, 1944, 2187, 2358, 2916, 3144, 3537, 4374, 4716, 5832, 6561, 7074, 8748, 9432, 10611, 13122, 14148, 17496, 19683, 21222, 26244, 28296, 31833, 39366, 42444, 52488, 63666, 78732, 84888, 95499, 127332, 157464, 190998, 254664, 286497, 381996, 572994, 763992, 859491, 1145988, 1718982, 2291976, 2578473, 3437964, 5156946, 6875928, 10313892, 20627784]

約数ペア:

[(1, 20627784), (2, 10313892), (3, 6875928), (4, 5156946), (6, 3437964), (8, 2578473), (9, 2291976), (12, 1718982), (18, 1145988), (24, 859491), (27, 763992), (36, 572994), (54, 381996), (72, 286497), (81, 254664), (108, 190998), (131, 157464), (162, 127332), (216, 95499), (243, 84888), (262, 78732), (324, 63666), (393, 52488), (486, 42444), (524, 39366), (648, 31833), (729, 28296), (786, 26244), (972, 21222), (1048, 19683), (1179, 17496), (1458, 14148), (1572, 13122), (1944, 10611), (2187, 9432), (2358, 8748), (2916, 7074), (3144, 6561), (3537, 5832), (4374, 4716)]