262403840

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:458

約数の個数: 144

約数和(自身を含む): 688746240

約数和(自身を除く): 426342400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 31, 32, 34, 40, 62, 64, 68, 80, 85, 124, 128, 136, 155, 160, 170, 248, 256, 272, 310, 320, 340, 389, 496, 527, 544, 620, 640, 680, 778, 992, 1054, 1088, 1240, 1280, 1360, 1556, 1945, 1984, 2108, 2176, 2480, 2635, 2720, 3112, 3890, 3968, 4216, 4352, 4960, 5270, 5440, 6224, 6613, 7780, 7936, 8432, 9920, 10540, 10880, 12059, 12448, 13226, 15560, 16864, 19840, 21080, 21760, 24118, 24896, 26452, 31120, 33065, 33728, 39680, 42160, 48236, 49792, 52904, 60295, 62240, 66130, 67456, 84320, 96472, 99584, 105808, 120590, 124480, 132260, 134912, 168640, 192944, 205003, 211616, 241180, 248960, 264520, 337280, 385888, 410006, 423232, 482360, 497920, 529040, 674560, 771776, 820012, 846464, 964720, 1025015, 1058080, 1543552, 1640024, 1692928, 1929440, 2050030, 2116160, 3087104, 3280048, 3858880, 4100060, 4232320, 6560096, 7717760, 8200120, 8464640, 13120192, 15435520, 16400240, 26240384, 32800480, 52480768, 65600960, 131201920, 262403840]

約数ペア:

[(1, 262403840), (2, 131201920), (4, 65600960), (5, 52480768), (8, 32800480), (10, 26240384), (16, 16400240), (17, 15435520), (20, 13120192), (31, 8464640), (32, 8200120), (34, 7717760), (40, 6560096), (62, 4232320), (64, 4100060), (68, 3858880), (80, 3280048), (85, 3087104), (124, 2116160), (128, 2050030), (136, 1929440), (155, 1692928), (160, 1640024), (170, 1543552), (248, 1058080), (256, 1025015), (272, 964720), (310, 846464), (320, 820012), (340, 771776), (389, 674560), (496, 529040), (527, 497920), (544, 482360), (620, 423232), (640, 410006), (680, 385888), (778, 337280), (992, 264520), (1054, 248960), (1088, 241180), (1240, 211616), (1280, 205003), (1360, 192944), (1556, 168640), (1945, 134912), (1984, 132260), (2108, 124480), (2176, 120590), (2480, 105808), (2635, 99584), (2720, 96472), (3112, 84320), (3890, 67456), (3968, 66130), (4216, 62240), (4352, 60295), (4960, 52904), (5270, 49792), (5440, 48236), (6224, 42160), (6613, 39680), (7780, 33728), (7936, 33065), (8432, 31120), (9920, 26452), (10540, 24896), (10880, 24118), (12059, 21760), (12448, 21080), (13226, 19840), (15560, 16864)]