1285751428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{43}}^1\times {\mathrm{1087}}^1$

素因数の和:1193

約数の個数: 72

約数和(自身を含む): 2594375168

約数和(自身を除く): 1308623740

約数列:

[1, 2, 4, 13, 23, 26, 43, 46, 52, 86, 92, 172, 299, 529, 559, 598, 989, 1058, 1087, 1118, 1196, 1978, 2116, 2174, 2236, 3956, 4348, 6877, 12857, 13754, 14131, 22747, 25001, 25714, 27508, 28262, 45494, 46741, 50002, 51428, 56524, 90988, 93482, 100004, 186964, 295711, 325013, 575023, 591422, 607633, 650026, 1075043, 1150046, 1182844, 1215266, 1300052, 2150086, 2300092, 2430532, 4300172, 7475299, 13975559, 14950598, 24725989, 27951118, 29901196, 49451978, 55902236, 98903956, 321437857, 642875714, 1285751428]

約数ペア:

[(1, 1285751428), (2, 642875714), (4, 321437857), (13, 98903956), (23, 55902236), (26, 49451978), (43, 29901196), (46, 27951118), (52, 24725989), (86, 14950598), (92, 13975559), (172, 7475299), (299, 4300172), (529, 2430532), (559, 2300092), (598, 2150086), (989, 1300052), (1058, 1215266), (1087, 1182844), (1118, 1150046), (1196, 1075043), (1978, 650026), (2116, 607633), (2174, 591422), (2236, 575023), (3956, 325013), (4348, 295711), (6877, 186964), (12857, 100004), (13754, 93482), (14131, 90988), (22747, 56524), (25001, 51428), (25714, 50002), (27508, 46741), (28262, 45494)]