21291363890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{823}}^1\times {\mathrm{4909}}^1$

素因数の和:5787

約数の個数: 64

約数和(自身を含む): 41947269120

約数和(自身を除く): 20655905230

約数列:

[1, 2, 5, 10, 17, 31, 34, 62, 85, 155, 170, 310, 527, 823, 1054, 1646, 2635, 4115, 4909, 5270, 8230, 9818, 13991, 24545, 25513, 27982, 49090, 51026, 69955, 83453, 127565, 139910, 152179, 166906, 255130, 304358, 417265, 433721, 760895, 834530, 867442, 1521790, 2168605, 2587043, 4040107, 4337210, 5174086, 8080214, 12935215, 20200535, 25870430, 40401070, 68681819, 125243317, 137363638, 250486634, 343409095, 626216585, 686818190, 1252433170, 2129136389, 4258272778, 10645681945, 21291363890]

約数ペア:

[(1, 21291363890), (2, 10645681945), (5, 4258272778), (10, 2129136389), (17, 1252433170), (31, 686818190), (34, 626216585), (62, 343409095), (85, 250486634), (155, 137363638), (170, 125243317), (310, 68681819), (527, 40401070), (823, 25870430), (1054, 20200535), (1646, 12935215), (2635, 8080214), (4115, 5174086), (4909, 4337210), (5270, 4040107), (8230, 2587043), (9818, 2168605), (13991, 1521790), (24545, 867442), (25513, 834530), (27982, 760895), (49090, 433721), (51026, 417265), (69955, 304358), (83453, 255130), (127565, 166906), (139910, 152179)]