205425920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{227}}^1$

素因数の和:356

約数の個数: 144

約数和(自身を含む): 570423168

約数和(自身を除く): 364997248

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 101, 112, 128, 140, 160, 202, 224, 227, 256, 280, 320, 404, 448, 454, 505, 560, 640, 707, 808, 896, 908, 1010, 1120, 1135, 1280, 1414, 1589, 1616, 1792, 1816, 2020, 2240, 2270, 2828, 3178, 3232, 3535, 3632, 4040, 4480, 4540, 5656, 6356, 6464, 7070, 7264, 7945, 8080, 8960, 9080, 11312, 12712, 12928, 14140, 14528, 15890, 16160, 18160, 22624, 22927, 25424, 25856, 28280, 29056, 31780, 32320, 36320, 45248, 45854, 50848, 56560, 58112, 63560, 64640, 72640, 90496, 91708, 101696, 113120, 114635, 127120, 129280, 145280, 160489, 180992, 183416, 203392, 226240, 229270, 254240, 290560, 320978, 366832, 406784, 452480, 458540, 508480, 641956, 733664, 802445, 904960, 917080, 1016960, 1283912, 1467328, 1604890, 1834160, 2033920, 2567824, 2934656, 3209780, 3668320, 5135648, 5869312, 6419560, 7336640, 10271296, 12839120, 14673280, 20542592, 25678240, 29346560, 41085184, 51356480, 102712960, 205425920]

約数ペア:

[(1, 205425920), (2, 102712960), (4, 51356480), (5, 41085184), (7, 29346560), (8, 25678240), (10, 20542592), (14, 14673280), (16, 12839120), (20, 10271296), (28, 7336640), (32, 6419560), (35, 5869312), (40, 5135648), (56, 3668320), (64, 3209780), (70, 2934656), (80, 2567824), (101, 2033920), (112, 1834160), (128, 1604890), (140, 1467328), (160, 1283912), (202, 1016960), (224, 917080), (227, 904960), (256, 802445), (280, 733664), (320, 641956), (404, 508480), (448, 458540), (454, 452480), (505, 406784), (560, 366832), (640, 320978), (707, 290560), (808, 254240), (896, 229270), (908, 226240), (1010, 203392), (1120, 183416), (1135, 180992), (1280, 160489), (1414, 145280), (1589, 129280), (1616, 127120), (1792, 114635), (1816, 113120), (2020, 101696), (2240, 91708), (2270, 90496), (2828, 72640), (3178, 64640), (3232, 63560), (3535, 58112), (3632, 56560), (4040, 50848), (4480, 45854), (4540, 45248), (5656, 36320), (6356, 32320), (6464, 31780), (7070, 29056), (7264, 28280), (7945, 25856), (8080, 25424), (8960, 22927), (9080, 22624), (11312, 18160), (12712, 16160), (12928, 15890), (14140, 14528)]