25320490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:215

約数の個数: 64

約数和(自身を含む): 51996672

約数和(自身を除く): 26676182

約数列:

[1, 2, 5, 10, 13, 26, 31, 61, 62, 65, 103, 122, 130, 155, 206, 305, 310, 403, 515, 610, 793, 806, 1030, 1339, 1586, 1891, 2015, 2678, 3193, 3782, 3965, 4030, 6283, 6386, 6695, 7930, 9455, 12566, 13390, 15965, 18910, 24583, 31415, 31930, 41509, 49166, 62830, 81679, 83018, 122915, 163358, 194773, 207545, 245830, 389546, 408395, 415090, 816790, 973865, 1947730, 2532049, 5064098, 12660245, 25320490]

約数ペア:

[(1, 25320490), (2, 12660245), (5, 5064098), (10, 2532049), (13, 1947730), (26, 973865), (31, 816790), (61, 415090), (62, 408395), (65, 389546), (103, 245830), (122, 207545), (130, 194773), (155, 163358), (206, 122915), (305, 83018), (310, 81679), (403, 62830), (515, 49166), (610, 41509), (793, 31930), (806, 31415), (1030, 24583), (1339, 18910), (1586, 15965), (1891, 13390), (2015, 12566), (2678, 9455), (3193, 7930), (3782, 6695), (3965, 6386), (4030, 6283)]