890339905

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{569}}^1$

素因数の和:794

約数の個数: 64

約数和(自身を含む): 1394265600

約数和(自身を除く): 503925695

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 181, 247, 455, 569, 665, 905, 1235, 1267, 1729, 2353, 2845, 3439, 3983, 6335, 7397, 8645, 10811, 11765, 16471, 17195, 19915, 24073, 36985, 44707, 51779, 54055, 75677, 82355, 102989, 120365, 140543, 223535, 258895, 312949, 378385, 514945, 702715, 720923, 983801, 1338857, 1564745, 1956791, 3604615, 4919005, 6694285, 9371999, 9783955, 13697537, 25438283, 46859995, 68487685, 127191415, 178067981, 890339905]

約数ペア:

[(1, 890339905), (5, 178067981), (7, 127191415), (13, 68487685), (19, 46859995), (35, 25438283), (65, 13697537), (91, 9783955), (95, 9371999), (133, 6694285), (181, 4919005), (247, 3604615), (455, 1956791), (569, 1564745), (665, 1338857), (905, 983801), (1235, 720923), (1267, 702715), (1729, 514945), (2353, 378385), (2845, 312949), (3439, 258895), (3983, 223535), (6335, 140543), (7397, 120365), (8645, 102989), (10811, 82355), (11765, 75677), (16471, 54055), (17195, 51779), (19915, 44707), (24073, 36985)]