25220360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^2$

素因数の和:139

約数の個数: 96

約数和(自身を含む): 65422080

約数和(自身を除く): 40201720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 43, 44, 55, 62, 86, 88, 110, 124, 155, 172, 215, 220, 248, 310, 341, 344, 430, 440, 473, 620, 682, 860, 946, 1240, 1333, 1364, 1705, 1720, 1849, 1892, 2365, 2666, 2728, 3410, 3698, 3784, 4730, 5332, 6665, 6820, 7396, 9245, 9460, 10664, 13330, 13640, 14663, 14792, 18490, 18920, 20339, 26660, 29326, 36980, 40678, 53320, 57319, 58652, 73315, 73960, 81356, 101695, 114638, 117304, 146630, 162712, 203390, 229276, 286595, 293260, 406780, 458552, 573190, 586520, 630509, 813560, 1146380, 1261018, 2292760, 2522036, 3152545, 5044072, 6305090, 12610180, 25220360]

約数ペア:

[(1, 25220360), (2, 12610180), (4, 6305090), (5, 5044072), (8, 3152545), (10, 2522036), (11, 2292760), (20, 1261018), (22, 1146380), (31, 813560), (40, 630509), (43, 586520), (44, 573190), (55, 458552), (62, 406780), (86, 293260), (88, 286595), (110, 229276), (124, 203390), (155, 162712), (172, 146630), (215, 117304), (220, 114638), (248, 101695), (310, 81356), (341, 73960), (344, 73315), (430, 58652), (440, 57319), (473, 53320), (620, 40678), (682, 36980), (860, 29326), (946, 26660), (1240, 20339), (1333, 18920), (1364, 18490), (1705, 14792), (1720, 14663), (1849, 13640), (1892, 13330), (2365, 10664), (2666, 9460), (2728, 9245), (3410, 7396), (3698, 6820), (3784, 6665), (4730, 5332)]