21167684725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{373}}^1$

素因数の和:671

約数の個数: 96

約数和(自身を含む): 31053369600

約数和(自身を除く): 9885684875

約数列:

[1, 5, 11, 17, 25, 55, 61, 85, 187, 199, 275, 305, 373, 425, 671, 935, 995, 1037, 1525, 1865, 2189, 3355, 3383, 4103, 4675, 4975, 5185, 6341, 9325, 10945, 11407, 12139, 16775, 16915, 20515, 22753, 25925, 31705, 37213, 54725, 57035, 60695, 69751, 74227, 84575, 102575, 113765, 133529, 158525, 186065, 206363, 250283, 285175, 303475, 348755, 371135, 386801, 568825, 667645, 816497, 930325, 1031815, 1251415, 1261859, 1743775, 1855675, 1934005, 2269993, 3338225, 4082485, 4254811, 4527847, 5159075, 6257075, 6309295, 9670025, 11349965, 13880449, 20412425, 21274055, 22639235, 31546475, 49806317, 56749825, 69402245, 76973399, 106370275, 113196175, 249031585, 347011225, 384866995, 846707389, 1245157925, 1924334975, 4233536945, 21167684725]

約数ペア:

[(1, 21167684725), (5, 4233536945), (11, 1924334975), (17, 1245157925), (25, 846707389), (55, 384866995), (61, 347011225), (85, 249031585), (187, 113196175), (199, 106370275), (275, 76973399), (305, 69402245), (373, 56749825), (425, 49806317), (671, 31546475), (935, 22639235), (995, 21274055), (1037, 20412425), (1525, 13880449), (1865, 11349965), (2189, 9670025), (3355, 6309295), (3383, 6257075), (4103, 5159075), (4675, 4527847), (4975, 4254811), (5185, 4082485), (6341, 3338225), (9325, 2269993), (10945, 1934005), (11407, 1855675), (12139, 1743775), (16775, 1261859), (16915, 1251415), (20515, 1031815), (22753, 930325), (25925, 816497), (31705, 667645), (37213, 568825), (54725, 386801), (57035, 371135), (60695, 348755), (69751, 303475), (74227, 285175), (84575, 250283), (102575, 206363), (113765, 186065), (133529, 158525)]