204090640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{631}}^1$

素因数の和:968

約数の個数: 80

約数和(自身を含む): 513467136

約数和(自身を除く): 309376496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 311, 520, 622, 631, 1040, 1244, 1262, 1555, 2488, 2524, 3110, 3155, 4043, 4976, 5048, 6220, 6310, 8086, 8203, 10096, 12440, 12620, 16172, 16406, 20215, 24880, 25240, 32344, 32812, 40430, 41015, 50480, 64688, 65624, 80860, 82030, 131248, 161720, 164060, 196241, 323440, 328120, 392482, 656240, 784964, 981205, 1569928, 1962410, 2551133, 3139856, 3924820, 5102266, 7849640, 10204532, 12755665, 15699280, 20409064, 25511330, 40818128, 51022660, 102045320, 204090640]

約数ペア:

[(1, 204090640), (2, 102045320), (4, 51022660), (5, 40818128), (8, 25511330), (10, 20409064), (13, 15699280), (16, 12755665), (20, 10204532), (26, 7849640), (40, 5102266), (52, 3924820), (65, 3139856), (80, 2551133), (104, 1962410), (130, 1569928), (208, 981205), (260, 784964), (311, 656240), (520, 392482), (622, 328120), (631, 323440), (1040, 196241), (1244, 164060), (1262, 161720), (1555, 131248), (2488, 82030), (2524, 80860), (3110, 65624), (3155, 64688), (4043, 50480), (4976, 41015), (5048, 40430), (6220, 32812), (6310, 32344), (8086, 25240), (8203, 24880), (10096, 20215), (12440, 16406), (12620, 16172)]