25000040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{367}}^1$

素因数の和:522

約数の個数: 64

約数和(自身を含む): 61205760

約数和(自身を除く): 36205720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 131, 260, 262, 367, 520, 524, 655, 734, 1048, 1310, 1468, 1703, 1835, 2620, 2936, 3406, 3670, 4771, 5240, 6812, 7340, 8515, 9542, 13624, 14680, 17030, 19084, 23855, 34060, 38168, 47710, 48077, 68120, 95420, 96154, 190840, 192308, 240385, 384616, 480770, 625001, 961540, 1250002, 1923080, 2500004, 3125005, 5000008, 6250010, 12500020, 25000040]

約数ペア:

[(1, 25000040), (2, 12500020), (4, 6250010), (5, 5000008), (8, 3125005), (10, 2500004), (13, 1923080), (20, 1250002), (26, 961540), (40, 625001), (52, 480770), (65, 384616), (104, 240385), (130, 192308), (131, 190840), (260, 96154), (262, 95420), (367, 68120), (520, 48077), (524, 47710), (655, 38168), (734, 34060), (1048, 23855), (1310, 19084), (1468, 17030), (1703, 14680), (1835, 13624), (2620, 9542), (2936, 8515), (3406, 7340), (3670, 6812), (4771, 5240)]