291591520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^2\times {\mathrm{197}}^1$

素因数の和:281

約数の個数: 144

約数和(自身を含む): 782269488

約数和(自身を除く): 490677968

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 32, 40, 44, 55, 58, 80, 88, 110, 116, 145, 160, 176, 197, 220, 232, 290, 319, 352, 394, 440, 464, 580, 638, 788, 841, 880, 928, 985, 1160, 1276, 1576, 1595, 1682, 1760, 1970, 2167, 2320, 2552, 3152, 3190, 3364, 3940, 4205, 4334, 4640, 5104, 5713, 6304, 6380, 6728, 7880, 8410, 8668, 9251, 10208, 10835, 11426, 12760, 13456, 15760, 16820, 17336, 18502, 21670, 22852, 25520, 26912, 28565, 31520, 33640, 34672, 37004, 43340, 45704, 46255, 51040, 57130, 62843, 67280, 69344, 74008, 86680, 91408, 92510, 114260, 125686, 134560, 148016, 165677, 173360, 182816, 185020, 228520, 251372, 296032, 314215, 331354, 346720, 370040, 457040, 502744, 628430, 662708, 740080, 828385, 914080, 1005488, 1256860, 1325416, 1480160, 1656770, 1822447, 2010976, 2513720, 2650832, 3313540, 3644894, 5027440, 5301664, 6627080, 7289788, 9112235, 10054880, 13254160, 14579576, 18224470, 26508320, 29159152, 36448940, 58318304, 72897880, 145795760, 291591520]

約数ペア:

[(1, 291591520), (2, 145795760), (4, 72897880), (5, 58318304), (8, 36448940), (10, 29159152), (11, 26508320), (16, 18224470), (20, 14579576), (22, 13254160), (29, 10054880), (32, 9112235), (40, 7289788), (44, 6627080), (55, 5301664), (58, 5027440), (80, 3644894), (88, 3313540), (110, 2650832), (116, 2513720), (145, 2010976), (160, 1822447), (176, 1656770), (197, 1480160), (220, 1325416), (232, 1256860), (290, 1005488), (319, 914080), (352, 828385), (394, 740080), (440, 662708), (464, 628430), (580, 502744), (638, 457040), (788, 370040), (841, 346720), (880, 331354), (928, 314215), (985, 296032), (1160, 251372), (1276, 228520), (1576, 185020), (1595, 182816), (1682, 173360), (1760, 165677), (1970, 148016), (2167, 134560), (2320, 125686), (2552, 114260), (3152, 92510), (3190, 91408), (3364, 86680), (3940, 74008), (4205, 69344), (4334, 67280), (4640, 62843), (5104, 57130), (5713, 51040), (6304, 46255), (6380, 45704), (6728, 43340), (7880, 37004), (8410, 34672), (8668, 33640), (9251, 31520), (10208, 28565), (10835, 26912), (11426, 25520), (12760, 22852), (13456, 21670), (15760, 18502), (16820, 17336)]