20923974

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{991}}^1$

素因数の和:1042

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 30501306

約数列:

[1, 2, 3, 6, 9, 17, 18, 23, 27, 34, 46, 51, 54, 69, 102, 138, 153, 207, 306, 391, 414, 459, 621, 782, 918, 991, 1173, 1242, 1982, 2346, 2973, 3519, 5946, 7038, 8919, 10557, 16847, 17838, 21114, 22793, 26757, 33694, 45586, 50541, 53514, 68379, 101082, 136758, 151623, 205137, 303246, 387481, 410274, 454869, 615411, 774962, 909738, 1162443, 1230822, 2324886, 3487329, 6974658, 10461987, 20923974]

約数ペア:

[(1, 20923974), (2, 10461987), (3, 6974658), (6, 3487329), (9, 2324886), (17, 1230822), (18, 1162443), (23, 909738), (27, 774962), (34, 615411), (46, 454869), (51, 410274), (54, 387481), (69, 303246), (102, 205137), (138, 151623), (153, 136758), (207, 101082), (306, 68379), (391, 53514), (414, 50541), (459, 45586), (621, 33694), (782, 26757), (918, 22793), (991, 21114), (1173, 17838), (1242, 16847), (1982, 10557), (2346, 8919), (2973, 7038), (3519, 5946)]