21879181805

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{251}}^1\times {\mathrm{353}}^1$

素因数の和:782

約数の個数: 64

約数和(自身を含む): 29674149120

約数和(自身を除く): 7794967315

約数列:

[1, 5, 13, 29, 65, 131, 145, 251, 353, 377, 655, 1255, 1703, 1765, 1885, 3263, 3799, 4589, 7279, 8515, 10237, 16315, 18995, 22945, 32881, 36395, 46243, 49387, 51185, 88603, 94627, 133081, 164405, 231215, 246935, 427453, 443015, 473135, 601159, 665405, 953549, 1151839, 1341047, 2137265, 2569487, 3005795, 4767745, 5759195, 6705235, 11606993, 12396137, 12847435, 17433611, 33403331, 58034965, 61980685, 87168055, 150890909, 167016655, 336602797, 754454545, 1683013985, 4375836361, 21879181805]

約数ペア:

[(1, 21879181805), (5, 4375836361), (13, 1683013985), (29, 754454545), (65, 336602797), (131, 167016655), (145, 150890909), (251, 87168055), (353, 61980685), (377, 58034965), (655, 33403331), (1255, 17433611), (1703, 12847435), (1765, 12396137), (1885, 11606993), (3263, 6705235), (3799, 5759195), (4589, 4767745), (7279, 3005795), (8515, 2569487), (10237, 2137265), (16315, 1341047), (18995, 1151839), (22945, 953549), (32881, 665405), (36395, 601159), (46243, 473135), (49387, 443015), (51185, 427453), (88603, 246935), (94627, 231215), (133081, 164405)]