20039968

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{719}}^1$

素因数の和:809

約数の個数: 48

約数和(自身を含む): 43182720

約数和(自身を除く): 23142752

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 67, 104, 134, 208, 268, 416, 536, 719, 871, 1072, 1438, 1742, 2144, 2876, 3484, 5752, 6968, 9347, 11504, 13936, 18694, 23008, 27872, 37388, 48173, 74776, 96346, 149552, 192692, 299104, 385384, 626249, 770768, 1252498, 1541536, 2504996, 5009992, 10019984, 20039968]

約数ペア:

[(1, 20039968), (2, 10019984), (4, 5009992), (8, 2504996), (13, 1541536), (16, 1252498), (26, 770768), (32, 626249), (52, 385384), (67, 299104), (104, 192692), (134, 149552), (208, 96346), (268, 74776), (416, 48173), (536, 37388), (719, 27872), (871, 23008), (1072, 18694), (1438, 13936), (1742, 11504), (2144, 9347), (2876, 6968), (3484, 5752)]