20720032

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{643}}^1$

素因数の和:725

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 23097728

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 53, 76, 106, 152, 212, 304, 424, 608, 643, 848, 1007, 1286, 1696, 2014, 2572, 4028, 5144, 8056, 10288, 12217, 16112, 20576, 24434, 32224, 34079, 48868, 68158, 97736, 136316, 195472, 272632, 390944, 545264, 647501, 1090528, 1295002, 2590004, 5180008, 10360016, 20720032]

約数ペア:

[(1, 20720032), (2, 10360016), (4, 5180008), (8, 2590004), (16, 1295002), (19, 1090528), (32, 647501), (38, 545264), (53, 390944), (76, 272632), (106, 195472), (152, 136316), (212, 97736), (304, 68158), (424, 48868), (608, 34079), (643, 32224), (848, 24434), (1007, 20576), (1286, 16112), (1696, 12217), (2014, 10288), (2572, 8056), (4028, 5144)]