20981484

素因数分解:

$2^2\times 3^3\times {\mathrm{131}}^1\times {\mathrm{1483}}^1$

素因数の和:1627

約数の個数: 48

約数和(自身を含む): 54848640

約数和(自身を除く): 33867156

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 131, 262, 393, 524, 786, 1179, 1483, 1572, 2358, 2966, 3537, 4449, 4716, 5932, 7074, 8898, 13347, 14148, 17796, 26694, 40041, 53388, 80082, 160164, 194273, 388546, 582819, 777092, 1165638, 1748457, 2331276, 3496914, 5245371, 6993828, 10490742, 20981484]

約数ペア:

[(1, 20981484), (2, 10490742), (3, 6993828), (4, 5245371), (6, 3496914), (9, 2331276), (12, 1748457), (18, 1165638), (27, 777092), (36, 582819), (54, 388546), (108, 194273), (131, 160164), (262, 80082), (393, 53388), (524, 40041), (786, 26694), (1179, 17796), (1483, 14148), (1572, 13347), (2358, 8898), (2966, 7074), (3537, 5932), (4449, 4716)]