81735680

素因数分解:

$2^{12}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1$

素因数の和:349

約数の個数: 104

約数和(自身を含む): 211917552

約数和(自身を除く): 130181872

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 307, 320, 416, 512, 520, 614, 640, 832, 1024, 1040, 1228, 1280, 1535, 1664, 2048, 2080, 2456, 2560, 3070, 3328, 3991, 4096, 4160, 4912, 5120, 6140, 6656, 7982, 8320, 9824, 10240, 12280, 13312, 15964, 16640, 19648, 19955, 20480, 24560, 26624, 31928, 33280, 39296, 39910, 49120, 53248, 63856, 66560, 78592, 79820, 98240, 127712, 133120, 157184, 159640, 196480, 255424, 266240, 314368, 319280, 392960, 510848, 628736, 638560, 785920, 1021696, 1257472, 1277120, 1571840, 2043392, 2554240, 3143680, 4086784, 5108480, 6287360, 8173568, 10216960, 16347136, 20433920, 40867840, 81735680]

約数ペア:

[(1, 81735680), (2, 40867840), (4, 20433920), (5, 16347136), (8, 10216960), (10, 8173568), (13, 6287360), (16, 5108480), (20, 4086784), (26, 3143680), (32, 2554240), (40, 2043392), (52, 1571840), (64, 1277120), (65, 1257472), (80, 1021696), (104, 785920), (128, 638560), (130, 628736), (160, 510848), (208, 392960), (256, 319280), (260, 314368), (307, 266240), (320, 255424), (416, 196480), (512, 159640), (520, 157184), (614, 133120), (640, 127712), (832, 98240), (1024, 79820), (1040, 78592), (1228, 66560), (1280, 63856), (1535, 53248), (1664, 49120), (2048, 39910), (2080, 39296), (2456, 33280), (2560, 31928), (3070, 26624), (3328, 24560), (3991, 20480), (4096, 19955), (4160, 19648), (4912, 16640), (5120, 15964), (6140, 13312), (6656, 12280), (7982, 10240), (8320, 9824)]