28793380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2671}}^1$

素因数の和:2705

約数の個数: 72

約数和(自身を含む): 76761216

約数和(自身を除く): 47967836

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 2156, 2671, 2695, 5342, 5390, 10684, 10780, 13355, 18697, 26710, 29381, 37394, 53420, 58762, 74788, 93485, 117524, 130879, 146905, 186970, 205667, 261758, 293810, 373940, 411334, 523516, 587620, 654395, 822668, 1028335, 1308790, 1439669, 2056670, 2617580, 2879338, 4113340, 5758676, 7198345, 14396690, 28793380]

約数ペア:

[(1, 28793380), (2, 14396690), (4, 7198345), (5, 5758676), (7, 4113340), (10, 2879338), (11, 2617580), (14, 2056670), (20, 1439669), (22, 1308790), (28, 1028335), (35, 822668), (44, 654395), (49, 587620), (55, 523516), (70, 411334), (77, 373940), (98, 293810), (110, 261758), (140, 205667), (154, 186970), (196, 146905), (220, 130879), (245, 117524), (308, 93485), (385, 74788), (490, 58762), (539, 53420), (770, 37394), (980, 29381), (1078, 26710), (1540, 18697), (2156, 13355), (2671, 10780), (2695, 10684), (5342, 5390)]