21641880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13873}}^1$

素因数の和:13900

約数の個数: 64

約数和(自身を含む): 69924960

約数和(自身を除く): 48283080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13873, 27746, 41619, 55492, 69365, 83238, 110984, 138730, 166476, 180349, 208095, 277460, 332952, 360698, 416190, 541047, 554920, 721396, 832380, 901745, 1082094, 1442792, 1664760, 1803490, 2164188, 2705235, 3606980, 4328376, 5410470, 7213960, 10820940, 21641880]

約数ペア:

[(1, 21641880), (2, 10820940), (3, 7213960), (4, 5410470), (5, 4328376), (6, 3606980), (8, 2705235), (10, 2164188), (12, 1803490), (13, 1664760), (15, 1442792), (20, 1082094), (24, 901745), (26, 832380), (30, 721396), (39, 554920), (40, 541047), (52, 416190), (60, 360698), (65, 332952), (78, 277460), (104, 208095), (120, 180349), (130, 166476), (156, 138730), (195, 110984), (260, 83238), (312, 69365), (390, 55492), (520, 41619), (780, 27746), (1560, 13873)]