409760

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1$

素因数の和:225

約数の個数: 48

約数和(自身を含む): 1047816

約数和(自身を除く): 638056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 197, 208, 260, 394, 416, 520, 788, 985, 1040, 1576, 1970, 2080, 2561, 3152, 3940, 5122, 6304, 7880, 10244, 12805, 15760, 20488, 25610, 31520, 40976, 51220, 81952, 102440, 204880, 409760]

約数ペア:

[(1, 409760), (2, 204880), (4, 102440), (5, 81952), (8, 51220), (10, 40976), (13, 31520), (16, 25610), (20, 20488), (26, 15760), (32, 12805), (40, 10244), (52, 7880), (65, 6304), (80, 5122), (104, 3940), (130, 3152), (160, 2561), (197, 2080), (208, 1970), (260, 1576), (394, 1040), (416, 985), (520, 788)]