261984528

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{401}}^1$

素因数の和:777

約数の個数: 120

約数和(自身を含む): 793829400

約数和(自身を除く): 531844872

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 349, 401, 468, 624, 698, 802, 936, 1047, 1203, 1396, 1604, 1872, 2094, 2406, 2792, 3141, 3208, 3609, 4188, 4537, 4812, 5213, 5584, 6282, 6416, 7218, 8376, 9074, 9624, 10426, 12564, 13611, 14436, 15639, 16752, 18148, 19248, 20852, 25128, 27222, 28872, 31278, 36296, 40833, 41704, 46917, 50256, 54444, 57744, 62556, 72592, 81666, 83408, 93834, 108888, 125112, 139949, 163332, 187668, 217776, 250224, 279898, 326664, 375336, 419847, 559796, 653328, 750672, 839694, 1119592, 1259541, 1679388, 1819337, 2239184, 2519082, 3358776, 3638674, 5038164, 5458011, 6717552, 7277348, 10076328, 10916022, 14554696, 16374033, 20152656, 21832044, 29109392, 32748066, 43664088, 65496132, 87328176, 130992264, 261984528]

約数ペア:

[(1, 261984528), (2, 130992264), (3, 87328176), (4, 65496132), (6, 43664088), (8, 32748066), (9, 29109392), (12, 21832044), (13, 20152656), (16, 16374033), (18, 14554696), (24, 10916022), (26, 10076328), (36, 7277348), (39, 6717552), (48, 5458011), (52, 5038164), (72, 3638674), (78, 3358776), (104, 2519082), (117, 2239184), (144, 1819337), (156, 1679388), (208, 1259541), (234, 1119592), (312, 839694), (349, 750672), (401, 653328), (468, 559796), (624, 419847), (698, 375336), (802, 326664), (936, 279898), (1047, 250224), (1203, 217776), (1396, 187668), (1604, 163332), (1872, 139949), (2094, 125112), (2406, 108888), (2792, 93834), (3141, 83408), (3208, 81666), (3609, 72592), (4188, 62556), (4537, 57744), (4812, 54444), (5213, 50256), (5584, 46917), (6282, 41704), (6416, 40833), (7218, 36296), (8376, 31278), (9074, 28872), (9624, 27222), (10426, 25128), (12564, 20852), (13611, 19248), (14436, 18148), (15639, 16752)]