204055640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2\times {\mathrm{89}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 490665600

約数和(自身を除く): 286609960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 89, 124, 155, 172, 178, 215, 248, 310, 344, 356, 430, 445, 620, 712, 860, 890, 1240, 1333, 1720, 1780, 1849, 2666, 2759, 3560, 3698, 3827, 5332, 5518, 6665, 7396, 7654, 9245, 10664, 11036, 13330, 13795, 14792, 15308, 18490, 19135, 22072, 26660, 27590, 30616, 36980, 38270, 53320, 55180, 57319, 73960, 76540, 110360, 114638, 118637, 153080, 164561, 229276, 237274, 286595, 329122, 458552, 474548, 573190, 593185, 658244, 822805, 949096, 1146380, 1186370, 1316488, 1645610, 2292760, 2372740, 3291220, 4745480, 5101391, 6582440, 10202782, 20405564, 25506955, 40811128, 51013910, 102027820, 204055640]

約数ペア:

[(1, 204055640), (2, 102027820), (4, 51013910), (5, 40811128), (8, 25506955), (10, 20405564), (20, 10202782), (31, 6582440), (40, 5101391), (43, 4745480), (62, 3291220), (86, 2372740), (89, 2292760), (124, 1645610), (155, 1316488), (172, 1186370), (178, 1146380), (215, 949096), (248, 822805), (310, 658244), (344, 593185), (356, 573190), (430, 474548), (445, 458552), (620, 329122), (712, 286595), (860, 237274), (890, 229276), (1240, 164561), (1333, 153080), (1720, 118637), (1780, 114638), (1849, 110360), (2666, 76540), (2759, 73960), (3560, 57319), (3698, 55180), (3827, 53320), (5332, 38270), (5518, 36980), (6665, 30616), (7396, 27590), (7654, 26660), (9245, 22072), (10664, 19135), (11036, 18490), (13330, 15308), (13795, 14792)]