25428520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{619}}^1$

素因数の和:722

約数の個数: 64

約数和(自身を含む): 62496000

約数和(自身を除く): 37067480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 79, 104, 130, 158, 260, 316, 395, 520, 619, 632, 790, 1027, 1238, 1580, 2054, 2476, 3095, 3160, 4108, 4952, 5135, 6190, 8047, 8216, 10270, 12380, 16094, 20540, 24760, 32188, 40235, 41080, 48901, 64376, 80470, 97802, 160940, 195604, 244505, 321880, 391208, 489010, 635713, 978020, 1271426, 1956040, 2542852, 3178565, 5085704, 6357130, 12714260, 25428520]

約数ペア:

[(1, 25428520), (2, 12714260), (4, 6357130), (5, 5085704), (8, 3178565), (10, 2542852), (13, 1956040), (20, 1271426), (26, 978020), (40, 635713), (52, 489010), (65, 391208), (79, 321880), (104, 244505), (130, 195604), (158, 160940), (260, 97802), (316, 80470), (395, 64376), (520, 48901), (619, 41080), (632, 40235), (790, 32188), (1027, 24760), (1238, 20540), (1580, 16094), (2054, 12380), (2476, 10270), (3095, 8216), (3160, 8047), (4108, 6190), (4952, 5135)]