261942018

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{281}}^1$

素因数の和:372

約数の個数: 128

約数和(自身を含む): 648103680

約数和(自身を除く): 386161662

約数列:

[1, 2, 3, 6, 13, 17, 19, 26, 34, 37, 38, 39, 51, 57, 74, 78, 102, 111, 114, 221, 222, 247, 281, 323, 442, 481, 494, 562, 629, 646, 663, 703, 741, 843, 962, 969, 1258, 1326, 1406, 1443, 1482, 1686, 1887, 1938, 2109, 2886, 3653, 3774, 4199, 4218, 4777, 5339, 7306, 8177, 8398, 9139, 9554, 10397, 10678, 10959, 11951, 12597, 14331, 16017, 16354, 18278, 20794, 21918, 23902, 24531, 25194, 27417, 28662, 31191, 32034, 35853, 49062, 54834, 62101, 62382, 69407, 71706, 90763, 124202, 135161, 138814, 155363, 176749, 181526, 186303, 197543, 208221, 270322, 272289, 310726, 353498, 372606, 395086, 405483, 416442, 466089, 530247, 544578, 592629, 810966, 932178, 1060494, 1179919, 1185258, 2297737, 2359838, 2568059, 3358231, 3539757, 4595474, 5136118, 6716462, 6893211, 7079514, 7704177, 10074693, 13786422, 15408354, 20149386, 43657003, 87314006, 130971009, 261942018]

約数ペア:

[(1, 261942018), (2, 130971009), (3, 87314006), (6, 43657003), (13, 20149386), (17, 15408354), (19, 13786422), (26, 10074693), (34, 7704177), (37, 7079514), (38, 6893211), (39, 6716462), (51, 5136118), (57, 4595474), (74, 3539757), (78, 3358231), (102, 2568059), (111, 2359838), (114, 2297737), (221, 1185258), (222, 1179919), (247, 1060494), (281, 932178), (323, 810966), (442, 592629), (481, 544578), (494, 530247), (562, 466089), (629, 416442), (646, 405483), (663, 395086), (703, 372606), (741, 353498), (843, 310726), (962, 272289), (969, 270322), (1258, 208221), (1326, 197543), (1406, 186303), (1443, 181526), (1482, 176749), (1686, 155363), (1887, 138814), (1938, 135161), (2109, 124202), (2886, 90763), (3653, 71706), (3774, 69407), (4199, 62382), (4218, 62101), (4777, 54834), (5339, 49062), (7306, 35853), (8177, 32034), (8398, 31191), (9139, 28662), (9554, 27417), (10397, 25194), (10678, 24531), (10959, 23902), (11951, 21918), (12597, 20794), (14331, 18278), (16017, 16354)]