20433920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{307}}^1$

素因数の和:345

約数の個数: 88

約数和(自身を含む): 52959984

約数和(自身を除く): 32526064

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, 2080, 2456, 2560, 3070, 3328, 3991, 4160, 4912, 5120, 6140, 6656, 7982, 8320, 9824, 12280, 13312, 15964, 16640, 19648, 19955, 24560, 31928, 33280, 39296, 39910, 49120, 63856, 66560, 78592, 79820, 98240, 127712, 157184, 159640, 196480, 255424, 314368, 319280, 392960, 510848, 638560, 785920, 1021696, 1277120, 1571840, 2043392, 2554240, 4086784, 5108480, 10216960, 20433920]

約数ペア:

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