257317320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{587}}^1$

素因数の和:895

約数の個数: 128

約数和(自身を含む): 835712640

約数和(自身を除く): 578395320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 281, 312, 390, 520, 562, 587, 780, 843, 1124, 1174, 1405, 1560, 1686, 1761, 2248, 2348, 2810, 2935, 3372, 3522, 3653, 4215, 4696, 5620, 5870, 6744, 7044, 7306, 7631, 8430, 8805, 10959, 11240, 11740, 14088, 14612, 15262, 16860, 17610, 18265, 21918, 22893, 23480, 29224, 30524, 33720, 35220, 36530, 38155, 43836, 45786, 54795, 61048, 70440, 73060, 76310, 87672, 91572, 109590, 114465, 146120, 152620, 164947, 183144, 219180, 228930, 305240, 329894, 438360, 457860, 494841, 659788, 824735, 915720, 989682, 1319576, 1649470, 1979364, 2144311, 2474205, 3298940, 3958728, 4288622, 4948410, 6432933, 6597880, 8577244, 9896820, 10721555, 12865866, 17154488, 19793640, 21443110, 25731732, 32164665, 42886220, 51463464, 64329330, 85772440, 128658660, 257317320]

約数ペア:

[(1, 257317320), (2, 128658660), (3, 85772440), (4, 64329330), (5, 51463464), (6, 42886220), (8, 32164665), (10, 25731732), (12, 21443110), (13, 19793640), (15, 17154488), (20, 12865866), (24, 10721555), (26, 9896820), (30, 8577244), (39, 6597880), (40, 6432933), (52, 4948410), (60, 4288622), (65, 3958728), (78, 3298940), (104, 2474205), (120, 2144311), (130, 1979364), (156, 1649470), (195, 1319576), (260, 989682), (281, 915720), (312, 824735), (390, 659788), (520, 494841), (562, 457860), (587, 438360), (780, 329894), (843, 305240), (1124, 228930), (1174, 219180), (1405, 183144), (1560, 164947), (1686, 152620), (1761, 146120), (2248, 114465), (2348, 109590), (2810, 91572), (2935, 87672), (3372, 76310), (3522, 73060), (3653, 70440), (4215, 61048), (4696, 54795), (5620, 45786), (5870, 43836), (6744, 38155), (7044, 36530), (7306, 35220), (7631, 33720), (8430, 30524), (8805, 29224), (10959, 23480), (11240, 22893), (11740, 21918), (14088, 18265), (14612, 17610), (15262, 16860)]