1228981520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{90901}}^1$

素因数の和:90940

約数の個数: 60

約数和(自身を含む): 3094122276

約数和(自身を除く): 1865140756

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 2704, 3380, 6760, 13520, 90901, 181802, 363604, 454505, 727208, 909010, 1181713, 1454416, 1818020, 2363426, 3636040, 4726852, 5908565, 7272080, 9453704, 11817130, 15362269, 18907408, 23634260, 30724538, 47268520, 61449076, 76811345, 94537040, 122898152, 153622690, 245796304, 307245380, 614490760, 1228981520]

約数ペア:

[(1, 1228981520), (2, 614490760), (4, 307245380), (5, 245796304), (8, 153622690), (10, 122898152), (13, 94537040), (16, 76811345), (20, 61449076), (26, 47268520), (40, 30724538), (52, 23634260), (65, 18907408), (80, 15362269), (104, 11817130), (130, 9453704), (169, 7272080), (208, 5908565), (260, 4726852), (338, 3636040), (520, 2363426), (676, 1818020), (845, 1454416), (1040, 1181713), (1352, 909010), (1690, 727208), (2704, 454505), (3380, 363604), (6760, 181802), (13520, 90901)]