205748120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1$

素因数の和:205

約数の個数: 128

約数和(自身を含む): 503807040

約数和(自身を除く): 298058920

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 43, 53, 61, 74, 86, 106, 122, 148, 172, 185, 212, 215, 244, 265, 296, 305, 344, 370, 424, 430, 488, 530, 610, 740, 860, 1060, 1220, 1480, 1591, 1720, 1961, 2120, 2257, 2279, 2440, 2623, 3182, 3233, 3922, 4514, 4558, 5246, 6364, 6466, 7844, 7955, 9028, 9116, 9805, 10492, 11285, 11395, 12728, 12932, 13115, 15688, 15910, 16165, 18056, 18232, 19610, 20984, 22570, 22790, 25864, 26230, 31820, 32330, 39220, 45140, 45580, 52460, 63640, 64660, 78440, 84323, 90280, 91160, 97051, 104920, 119621, 129320, 139019, 168646, 194102, 239242, 278038, 337292, 388204, 421615, 478484, 485255, 556076, 598105, 674584, 695095, 776408, 843230, 956968, 970510, 1112152, 1196210, 1390190, 1686460, 1941020, 2392420, 2780380, 3372920, 3882040, 4784840, 5143703, 5560760, 10287406, 20574812, 25718515, 41149624, 51437030, 102874060, 205748120]

約数ペア:

[(1, 205748120), (2, 102874060), (4, 51437030), (5, 41149624), (8, 25718515), (10, 20574812), (20, 10287406), (37, 5560760), (40, 5143703), (43, 4784840), (53, 3882040), (61, 3372920), (74, 2780380), (86, 2392420), (106, 1941020), (122, 1686460), (148, 1390190), (172, 1196210), (185, 1112152), (212, 970510), (215, 956968), (244, 843230), (265, 776408), (296, 695095), (305, 674584), (344, 598105), (370, 556076), (424, 485255), (430, 478484), (488, 421615), (530, 388204), (610, 337292), (740, 278038), (860, 239242), (1060, 194102), (1220, 168646), (1480, 139019), (1591, 129320), (1720, 119621), (1961, 104920), (2120, 97051), (2257, 91160), (2279, 90280), (2440, 84323), (2623, 78440), (3182, 64660), (3233, 63640), (3922, 52460), (4514, 45580), (4558, 45140), (5246, 39220), (6364, 32330), (6466, 31820), (7844, 26230), (7955, 25864), (9028, 22790), (9116, 22570), (9805, 20984), (10492, 19610), (11285, 18232), (11395, 18056), (12728, 16165), (12932, 15910), (13115, 15688)]