20303728

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:433

約数の個数: 40

約数和(自身を含む): 40684896

約数和(自身を除く): 20381168

約数列:

[1, 2, 4, 8, 16, 61, 71, 122, 142, 244, 284, 293, 488, 568, 586, 976, 1136, 1172, 2344, 4331, 4688, 8662, 17324, 17873, 20803, 34648, 35746, 41606, 69296, 71492, 83212, 142984, 166424, 285968, 332848, 1268983, 2537966, 5075932, 10151864, 20303728]

約数ペア:

[(1, 20303728), (2, 10151864), (4, 5075932), (8, 2537966), (16, 1268983), (61, 332848), (71, 285968), (122, 166424), (142, 142984), (244, 83212), (284, 71492), (293, 69296), (488, 41606), (568, 35746), (586, 34648), (976, 20803), (1136, 17873), (1172, 17324), (2344, 8662), (4331, 4688)]