311309880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{761}}^1$

素因数の和:1269

約数の個数: 128

約数和(自身を含む): 1070945280

約数和(自身を除く): 759635400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 487, 761, 840, 974, 1461, 1522, 1948, 2283, 2435, 2922, 3044, 3409, 3805, 3896, 4566, 4870, 5327, 5844, 6088, 6818, 7305, 7610, 9132, 9740, 10227, 10654, 11415, 11688, 13636, 14610, 15220, 15981, 17045, 18264, 19480, 20454, 21308, 22830, 26635, 27272, 29220, 30440, 31962, 34090, 40908, 42616, 45660, 51135, 53270, 58440, 63924, 68180, 79905, 81816, 91320, 102270, 106540, 127848, 136360, 159810, 204540, 213080, 319620, 370607, 409080, 639240, 741214, 1111821, 1482428, 1853035, 2223642, 2594249, 2964856, 3706070, 4447284, 5188498, 5559105, 7412140, 7782747, 8894568, 10376996, 11118210, 12971245, 14824280, 15565494, 20753992, 22236420, 25942490, 31130988, 38913735, 44472840, 51884980, 62261976, 77827470, 103769960, 155654940, 311309880]

約数ペア:

[(1, 311309880), (2, 155654940), (3, 103769960), (4, 77827470), (5, 62261976), (6, 51884980), (7, 44472840), (8, 38913735), (10, 31130988), (12, 25942490), (14, 22236420), (15, 20753992), (20, 15565494), (21, 14824280), (24, 12971245), (28, 11118210), (30, 10376996), (35, 8894568), (40, 7782747), (42, 7412140), (56, 5559105), (60, 5188498), (70, 4447284), (84, 3706070), (105, 2964856), (120, 2594249), (140, 2223642), (168, 1853035), (210, 1482428), (280, 1111821), (420, 741214), (487, 639240), (761, 409080), (840, 370607), (974, 319620), (1461, 213080), (1522, 204540), (1948, 159810), (2283, 136360), (2435, 127848), (2922, 106540), (3044, 102270), (3409, 91320), (3805, 81816), (3896, 79905), (4566, 68180), (4870, 63924), (5327, 58440), (5844, 53270), (6088, 51135), (6818, 45660), (7305, 42616), (7610, 40908), (9132, 34090), (9740, 31962), (10227, 30440), (10654, 29220), (11415, 27272), (11688, 26635), (13636, 22830), (14610, 21308), (15220, 20454), (15981, 19480), (17045, 18264)]