256891180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{739}}^1$

素因数の和:959

約数の個数: 96

約数和(自身を含む): 668344320

約数和(自身を除く): 411453140

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 191, 260, 364, 382, 455, 739, 764, 910, 955, 1337, 1478, 1820, 1910, 2483, 2674, 2956, 3695, 3820, 4966, 5173, 5348, 6685, 7390, 9607, 9932, 10346, 12415, 13370, 14780, 17381, 19214, 20692, 24830, 25865, 26740, 34762, 38428, 48035, 49660, 51730, 67249, 69524, 86905, 96070, 103460, 134498, 141149, 173810, 192140, 268996, 282298, 336245, 347620, 564596, 672490, 705745, 988043, 1344980, 1411490, 1834937, 1976086, 2822980, 3669874, 3952172, 4940215, 7339748, 9174685, 9880430, 12844559, 18349370, 19760860, 25689118, 36698740, 51378236, 64222795, 128445590, 256891180]

約数ペア:

[(1, 256891180), (2, 128445590), (4, 64222795), (5, 51378236), (7, 36698740), (10, 25689118), (13, 19760860), (14, 18349370), (20, 12844559), (26, 9880430), (28, 9174685), (35, 7339748), (52, 4940215), (65, 3952172), (70, 3669874), (91, 2822980), (130, 1976086), (140, 1834937), (182, 1411490), (191, 1344980), (260, 988043), (364, 705745), (382, 672490), (455, 564596), (739, 347620), (764, 336245), (910, 282298), (955, 268996), (1337, 192140), (1478, 173810), (1820, 141149), (1910, 134498), (2483, 103460), (2674, 96070), (2956, 86905), (3695, 69524), (3820, 67249), (4966, 51730), (5173, 49660), (5348, 48035), (6685, 38428), (7390, 34762), (9607, 26740), (9932, 25865), (10346, 24830), (12415, 20692), (13370, 19214), (14780, 17381)]