281157240

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25747}}^1$

素因数の和:25781

約数の個数: 128

約数和(自身を含む): 1038159360

約数和(自身を除く): 757002120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460, 10920, 25747, 51494, 77241, 102988, 128735, 154482, 180229, 205976, 257470, 308964, 334711, 360458, 386205, 514940, 540687, 617928, 669422, 720916, 772410, 901145, 1004133, 1029880, 1081374, 1338844, 1441832, 1544820, 1673555, 1802290, 2008266, 2162748, 2342977, 2677688, 2703435, 3089640, 3347110, 3604580, 4016532, 4325496, 4685954, 5020665, 5406870, 6694220, 7028931, 7209160, 8033064, 9371908, 10041330, 10813740, 11714885, 13388440, 14057862, 18743816, 20082660, 21627480, 23429770, 28115724, 35144655, 40165320, 46859540, 56231448, 70289310, 93719080, 140578620, 281157240]

約数ペア:

[(1, 281157240), (2, 140578620), (3, 93719080), (4, 70289310), (5, 56231448), (6, 46859540), (7, 40165320), (8, 35144655), (10, 28115724), (12, 23429770), (13, 21627480), (14, 20082660), (15, 18743816), (20, 14057862), (21, 13388440), (24, 11714885), (26, 10813740), (28, 10041330), (30, 9371908), (35, 8033064), (39, 7209160), (40, 7028931), (42, 6694220), (52, 5406870), (56, 5020665), (60, 4685954), (65, 4325496), (70, 4016532), (78, 3604580), (84, 3347110), (91, 3089640), (104, 2703435), (105, 2677688), (120, 2342977), (130, 2162748), (140, 2008266), (156, 1802290), (168, 1673555), (182, 1544820), (195, 1441832), (210, 1338844), (260, 1081374), (273, 1029880), (280, 1004133), (312, 901145), (364, 772410), (390, 720916), (420, 669422), (455, 617928), (520, 540687), (546, 514940), (728, 386205), (780, 360458), (840, 334711), (910, 308964), (1092, 257470), (1365, 205976), (1560, 180229), (1820, 154482), (2184, 128735), (2730, 102988), (3640, 77241), (5460, 51494), (10920, 25747)]