251013280

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{317}}^1$

素因数の和:447

約数の個数: 144

約数和(自身を含む): 698866056

約数和(自身を除く): 447852776

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 101, 112, 140, 160, 196, 202, 224, 245, 280, 317, 392, 404, 490, 505, 560, 634, 707, 784, 808, 980, 1010, 1120, 1268, 1414, 1568, 1585, 1616, 1960, 2020, 2219, 2536, 2828, 3170, 3232, 3535, 3920, 4040, 4438, 4949, 5072, 5656, 6340, 7070, 7840, 8080, 8876, 9898, 10144, 11095, 11312, 12680, 14140, 15533, 16160, 17752, 19796, 22190, 22624, 24745, 25360, 28280, 31066, 32017, 35504, 39592, 44380, 49490, 50720, 56560, 62132, 64034, 71008, 77665, 79184, 88760, 98980, 113120, 124264, 128068, 155330, 158368, 160085, 177520, 197960, 224119, 248528, 256136, 310660, 320170, 355040, 395920, 448238, 497056, 512272, 621320, 640340, 791840, 896476, 1024544, 1120595, 1242640, 1280680, 1568833, 1792952, 2241190, 2485280, 2561360, 3137666, 3585904, 4482380, 5122720, 6275332, 7171808, 7844165, 8964760, 12550664, 15688330, 17929520, 25101328, 31376660, 35859040, 50202656, 62753320, 125506640, 251013280]

約数ペア:

[(1, 251013280), (2, 125506640), (4, 62753320), (5, 50202656), (7, 35859040), (8, 31376660), (10, 25101328), (14, 17929520), (16, 15688330), (20, 12550664), (28, 8964760), (32, 7844165), (35, 7171808), (40, 6275332), (49, 5122720), (56, 4482380), (70, 3585904), (80, 3137666), (98, 2561360), (101, 2485280), (112, 2241190), (140, 1792952), (160, 1568833), (196, 1280680), (202, 1242640), (224, 1120595), (245, 1024544), (280, 896476), (317, 791840), (392, 640340), (404, 621320), (490, 512272), (505, 497056), (560, 448238), (634, 395920), (707, 355040), (784, 320170), (808, 310660), (980, 256136), (1010, 248528), (1120, 224119), (1268, 197960), (1414, 177520), (1568, 160085), (1585, 158368), (1616, 155330), (1960, 128068), (2020, 124264), (2219, 113120), (2536, 98980), (2828, 88760), (3170, 79184), (3232, 77665), (3535, 71008), (3920, 64034), (4040, 62132), (4438, 56560), (4949, 50720), (5072, 49490), (5656, 44380), (6340, 39592), (7070, 35504), (7840, 32017), (8080, 31066), (8876, 28280), (9898, 25360), (10144, 24745), (11095, 22624), (11312, 22190), (12680, 19796), (14140, 17752), (15533, 16160)]