251338640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{661}}^1$

素因数の和:785

約数の個数: 120

約数和(自身を含む): 687815352

約数和(自身を除く): 436476712

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 97, 98, 112, 140, 194, 196, 245, 280, 388, 392, 485, 490, 560, 661, 679, 776, 784, 970, 980, 1322, 1358, 1552, 1940, 1960, 2644, 2716, 3305, 3395, 3880, 3920, 4627, 4753, 5288, 5432, 6610, 6790, 7760, 9254, 9506, 10576, 10864, 13220, 13580, 18508, 19012, 23135, 23765, 26440, 27160, 32389, 37016, 38024, 46270, 47530, 52880, 54320, 64117, 64778, 74032, 76048, 92540, 95060, 128234, 129556, 161945, 185080, 190120, 256468, 259112, 320585, 323890, 370160, 380240, 448819, 512936, 518224, 641170, 647780, 897638, 1025872, 1282340, 1295560, 1795276, 2244095, 2564680, 2591120, 3141733, 3590552, 4488190, 5129360, 6283466, 7181104, 8976380, 12566932, 15708665, 17952760, 25133864, 31417330, 35905520, 50267728, 62834660, 125669320, 251338640]

約数ペア:

[(1, 251338640), (2, 125669320), (4, 62834660), (5, 50267728), (7, 35905520), (8, 31417330), (10, 25133864), (14, 17952760), (16, 15708665), (20, 12566932), (28, 8976380), (35, 7181104), (40, 6283466), (49, 5129360), (56, 4488190), (70, 3590552), (80, 3141733), (97, 2591120), (98, 2564680), (112, 2244095), (140, 1795276), (194, 1295560), (196, 1282340), (245, 1025872), (280, 897638), (388, 647780), (392, 641170), (485, 518224), (490, 512936), (560, 448819), (661, 380240), (679, 370160), (776, 323890), (784, 320585), (970, 259112), (980, 256468), (1322, 190120), (1358, 185080), (1552, 161945), (1940, 129556), (1960, 128234), (2644, 95060), (2716, 92540), (3305, 76048), (3395, 74032), (3880, 64778), (3920, 64117), (4627, 54320), (4753, 52880), (5288, 47530), (5432, 46270), (6610, 38024), (6790, 37016), (7760, 32389), (9254, 27160), (9506, 26440), (10576, 23765), (10864, 23135), (13220, 19012), (13580, 18508)]