20152720

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:177

約数の個数: 120

約数和(自身を含む): 56105784

約数和(自身を除く): 35953064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 53, 56, 70, 80, 97, 98, 106, 112, 140, 194, 196, 212, 245, 265, 280, 371, 388, 392, 424, 485, 490, 530, 560, 679, 742, 776, 784, 848, 970, 980, 1060, 1358, 1484, 1552, 1855, 1940, 1960, 2120, 2597, 2716, 2968, 3395, 3710, 3880, 3920, 4240, 4753, 5141, 5194, 5432, 5936, 6790, 7420, 7760, 9506, 10282, 10388, 10864, 12985, 13580, 14840, 19012, 20564, 20776, 23765, 25705, 25970, 27160, 29680, 35987, 38024, 41128, 41552, 47530, 51410, 51940, 54320, 71974, 76048, 82256, 95060, 102820, 103880, 143948, 179935, 190120, 205640, 207760, 251909, 287896, 359870, 380240, 411280, 503818, 575792, 719740, 1007636, 1259545, 1439480, 2015272, 2519090, 2878960, 4030544, 5038180, 10076360, 20152720]

約数ペア:

[(1, 20152720), (2, 10076360), (4, 5038180), (5, 4030544), (7, 2878960), (8, 2519090), (10, 2015272), (14, 1439480), (16, 1259545), (20, 1007636), (28, 719740), (35, 575792), (40, 503818), (49, 411280), (53, 380240), (56, 359870), (70, 287896), (80, 251909), (97, 207760), (98, 205640), (106, 190120), (112, 179935), (140, 143948), (194, 103880), (196, 102820), (212, 95060), (245, 82256), (265, 76048), (280, 71974), (371, 54320), (388, 51940), (392, 51410), (424, 47530), (485, 41552), (490, 41128), (530, 38024), (560, 35987), (679, 29680), (742, 27160), (776, 25970), (784, 25705), (848, 23765), (970, 20776), (980, 20564), (1060, 19012), (1358, 14840), (1484, 13580), (1552, 12985), (1855, 10864), (1940, 10388), (1960, 10282), (2120, 9506), (2597, 7760), (2716, 7420), (2968, 6790), (3395, 5936), (3710, 5432), (3880, 5194), (3920, 5141), (4240, 4753)]