21249206529

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1\times {\mathrm{29333}}^1$

素因数の和:29605

約数の個数: 32

約数和(自身を含む): 30413491200

約数和(自身を除く): 9164284671

約数列:

[1, 3, 19, 57, 71, 179, 213, 537, 1349, 3401, 4047, 10203, 12709, 29333, 38127, 87999, 241471, 557327, 724413, 1671981, 2082643, 5250607, 6247929, 15751821, 39570217, 99761533, 118710651, 299284599, 372793097, 1118379291, 7083068843, 21249206529]

約数ペア:

[(1, 21249206529), (3, 7083068843), (19, 1118379291), (57, 372793097), (71, 299284599), (179, 118710651), (213, 99761533), (537, 39570217), (1349, 15751821), (3401, 6247929), (4047, 5250607), (10203, 2082643), (12709, 1671981), (29333, 724413), (38127, 557327), (87999, 241471)]